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The dimensions of a rectangle 2021-09-09
Ash pose la question :
I need to know how to figure out the dimensions of a rectangle. I know that the area is 30ft and the perimeter is 26ft. I'm 15 and I have no idea what I'm supposed to do.
Harley Weston lui répond.
The diameter of an octagon 2021-05-22
Sue pose la question :
What is the diameter of an octagon with 8 foot sides
Penny Nom lui répond.
An octagonal drum 2021-05-11
Louie pose la question :
I teach carpentry on an Indian reservation.
My students want to make an 18 inch drum frame.
They want to have 8 sides or an octagon shape to the drum frame.
What angle I have to set my miter saw to cut the angles to fit the octagon together.
I want to use this formula by changing the diameter of the frame.

Harley Weston lui répond.
A 2.5 acre square 2021-01-09
hannah pose la question :
how many feet of fence needed to fence a square 2.5 acres??
Penny Nom lui répond.
The distance between opposite vertices in an octagon 2020-11-14
joe pose la question :
If the dimension from one flat part of an octagon to opposite flat is 500 mm what is the largest diameter (point to point) of the octagon?
Harley Weston lui répond.
A diameter of a circle 2020-08-19
Apple pose la question :
One end of the the diameter of the circle with equation x^2+y^2-4x+4y=2 is (3,1). Find the coordinates of the other end of the diameter.
Penny Nom lui répond.
The missing diameter of a truncated cone 2020-04-17
Brandon pose la question :
Need a formula to find missing large Dia of a truncated cone where the small dia =.19" Height= 2" and taper =16deg
Harley Weston lui répond.
The fencing needed for a square pasture 2019-12-10
Penny pose la question :
I'm trying to calculate how many feet of fence I will need to fence a 4 acre square pasture.
Harley Weston lui répond.
The perimeter of a piece of a circle 2019-10-18
Arwin pose la question :
The radius of a circle is 17 cm. A chord XY lies 9 cm from the centre and divides the circle into two segments. Find the perimeter of the minor segment.
Penny Nom lui répond.
Price per square meter to price per square inch 2019-07-09
Al pose la question :
If something costs $2.5 square meter, how much would it cost in square inches? How do i convert costs per square inch, into square meters?
Harley Weston lui répond.
The perimeter of 200 acres 2019-06-14
AARON pose la question :
How many feet is the perimeter of 200 acres?
Penny Nom lui répond.
Conversions, feet, kilometers and acres 2019-06-10
Erika pose la question :
A lake has 113 feet deep and an area of 115 acres, what is the volume of the lake in cubic kilometer?
Harley Weston lui répond.
The volume of water in a pipe 2019-03-21
Abati pose la question :
How can I calculate the volume of water in a pipe with below details;

Pipe diameter - 6 inches
Length of pipe - 127meters

Penny Nom lui répond.
7 spheres on a hexagonal tray 2019-01-14
herm pose la question :
what is the length of each side of a hexagonal tray, with the height of each side 0.75 inch, to hold seven spheres, each with a diameter of 3.00 inches? The spheres are placed such that each side of the hexagon is touched by one sphere at its midpoint (and the seventh sphere is place in the center of the "ring" of the other six spheres.
Harley Weston lui répond.
A square and a triangle 2018-12-03
Livvy pose la question :
a square with a perimeter of 48 and a triangle with a perimeter of 38. when they are joined they make a pentagon. please find the perimeter
how can you find the perimeter of this. could you please help me?

Penny Nom lui répond.
Converting inches to centimeters 2018-05-25
Jason pose la question :
Hi!
Is there a method to approximately convert inches to cm in my head without using a calculator?

Thanks! Jason

Penny Nom lui répond.
Two expressions for the perimeter of a a rectangle 2018-05-13
Slayde pose la question :
A rectangular house has one side 4 metres longer than the other. Create two different expressions for its perimeter. The expressions should be given in factorised and expanded form.
Penny Nom lui répond.
A circle problem 2018-03-30
ahamed pose la question :
the diameters of a circle AB and CD intersect each other at O perpendicularly. Then a chord DF is drawn. AB and DF intersect at E. DE=6cn and EF=2cm.find the area of thw circle
Penny Nom lui répond.
The dimensions of a rectangle 2018-03-03
Mia pose la question :
A wire of length 36cm is bent to form a rectangle. Find the dimensions of the rectangle.
Penny Nom lui répond.
The perimeter of a square 2018-02-25
Alicia pose la question :
What's the perimeter of a square with 441cm square
Penny Nom lui répond.
The code on a new phone 2018-02-02
Maria pose la question :
Hi -
My husband gave me a new Samsung Galaxy mobile for out anniversaire gift. He set me a challenge which I have to solve before I can use the Phone. He has set the pin code with numbers 4, 7 and 0 and created a four digit code with the said numbers. Is there a way I can somehow list all possible combinations and try them all? Thanks!

Penny Nom lui répond.
Speed in kilometers per hour 2017-12-21
Cody pose la question :
if a train travels 400 meters in 30 seconds how many kilometers per hr is it traveling
Penny Nom lui répond.
A rectangle and a circle 2017-08-12
Ramzan pose la question :
a diagram shows the shape of rectangular framework with length (2x+20)cm and with (y+10)cm . The outline is made of wire . If a circle with diameter 56 cm is to be made from the wire and the area of the rectangle is 420 square centimeter ,find the possible lengths and width of the rectangle
Penny Nom lui répond.
The perimeter of a sector of a circle 2017-08-11
Alisa pose la question :
find the perimeter of the sector with radius 7 cm in which the angle at the centre is 60 degrees leave your answer in terms of pi
Penny Nom lui répond.
A lock with 3 tumblers 2017-07-29
Carol pose la question :
I have a lock that has 3 tumblers. The numbers are 0 - 9. I cannot recall what I set the combination to. How many combinations will there be with three numbers?
Penny Nom lui répond.
Acres and perimeter 2017-04-12
Peggy pose la question :
How many acres in 2700' circumference or perimeter
Penny Nom lui répond.
The inside diameter of a silo 2017-02-28
JOHN pose la question :
I need to find the inside diameter of a cement silo with an outside circumference 118 ft and a wall thickness of 7 inches. thank you John Kerr.
Penny Nom lui répond.
A rectangle with a given perimeter and area 2017-01-11
Joe pose la question :
i have a math question for homework that i don't understand. can you draw a rectangle that has 18cm in perimeters and 20cm in areas. i tried but i can't.
Penny Nom lui répond.
The area of a city block 2016-12-08
Miura pose la question :
A city block is three times as long as long as it is wide.if the distance around the block is 0.48 kilometers, what is the area of the block in square meters?
Penny Nom lui répond.
The distance around a warehouse 2016-09-21
Chuck pose la question :
How far do I walk when I walk around a 751,000 sq. ft. warehouse?
Penny Nom lui répond.
The dimensions of a rectangle 2016-08-31
Hazym pose la question :
How do I find the length(which is 15m longer than the breadth) and the breadth of a rectangle just by its perimeter which is 70 m?
Penny Nom lui répond.
The perimeter and area of a shape 2016-06-30
Scott pose la question :
If I have a 16 x 32 rectangle the square feet is 512. So if I take a rope 96 feet long , which is the lineal feet of the rectangle, and manipulate it to any shape I want does the square footage inside the rope stay at 512 square feet? Thanks in advance!
Penny Nom lui répond.
The area and the perimeter of a rectangle 2016-04-12
kimberly pose la question :
is there a relationship between the are and the perimeter of a rectangle? explain.
Penny Nom lui répond.
The area of a circle and a square 2016-04-10
Richard pose la question :
I cannot understand why if you have a perimeter say of 4 units as the circumference of a circle then you reshape it into a square you lose very approximately some 20% of its volume but the perimeter length stays the same.
Can you please explain this to me as to why the volume decreases.

Penny Nom lui répond.
The perimeter of a rectangle 2016-03-17
Linda pose la question :
Noel correctly adds the length of three sides of a rectangle and gets 88 cm her brother Ryan correctly adds the lengths of three sides of the same rectangle and gets 80cm. What is the number of cm in the perimeter of the rectangle
Penny Nom lui répond.
The diameter of the top of a truncated cone 2016-01-24
Peter pose la question :
I am trying to calculate the diameter of a truncated cone given one diameter the height of the cone and a 10% taper from one end to the other. For example a butter churn is 18" tall and 9" in diameter at the base. the sides need to slope inward at 10%
What is the diameter at 9" and 18"

Penny Nom lui répond.
The perimeter of a square 2016-01-16
dennis pose la question :
If I have eleven Square Acres, what would the perimeter dimensions be?
Penny Nom lui répond.
The perimeter of a triangular plot of land 2016-01-11
Janelle pose la question :
I need to fence off 6.5 acres. The plot is triangular shape. How many feet would I be fencing off?
Penny Nom lui répond.
A diameter of a circle 2015-12-27
sahil pose la question :
Find the equation of diameter of circle x2 +y2-6x +2y-8 which passes through the origin.
Penny Nom lui répond.
The perimeter of a 4 acre square 2015-12-16
samantha pose la question :
What is the distance in miles or how many laps to make a mile, if one was walking around 4 acres of land which is like a square?
Penny Nom lui répond.
The diameter and circumference of a circle 2015-09-01
Tracey pose la question :
Hello,
I own a custom workroom, I am figuring out fabric quantities or an estimate. When at the job site, I forgot to measure the diameter of the semi circle shape that I have to make a cushion for!!!
If the circumference of the semi circle is 165" what would the diameter be, maybe half this measurement????

I appreciate any help...I basically need the width from left to right to see if I can fit the cushion on one width of fabric that is 52" wide!

Penny Nom lui répond.
The perimeter of a rectangle 2015-05-28
Imran pose la question :
The length of a rectangle is x+3 centimetres.
The width of the rectangle is x-1 centimetres.

Find an expression in terms of x for the perimeter of the rectangle.
The perimeter of a rectangle The perimeter of a rectangle
Give your expressions in it's simplest form.
The perimeter of a rectangle The perimeter of a rectangle
Thank You.

Penny Nom lui répond.
The perimeter of a quarter circle 2015-05-21
Bethany pose la question :
The perimeter of a quarter circle is 3.57. What is the quarter circle's radius?
Penny Nom lui répond.
The perimeter of a quarter circle 2015-04-10
Riley pose la question :
How do you find the perimeter of a quarter circle when the radius is 56?
Penny Nom lui répond.
The perimeter of a quarter circle 2014-12-26
Maisy pose la question :
This is the question that I got for a math worksheet.
The radius of a quarter circle is 5 miles. What is the quarter circle's perimeter?
Use 3.14 for pi.

Penny Nom lui répond.
How does pir^2 = 1/4pid^2? 2014-10-14
al pose la question :
Hi I cant work out the algebra. How does pir^2 = 1/4pid^2 Thanx
Penny Nom lui répond.
A rectangle and a triangle 2014-09-27
rajesh pose la question :
The perimeter of a rectangle is equal to the perimeter of a right-angled triangle of height 12 cm if the base of the triangle is equal to the breadth of the rectangle, what is the length of the rectangle?
Penny Nom lui répond.
The perimeter of a parcel of land 2014-09-18
Shirley pose la question :
What is the perimeter of a parcel of land that is 564 acres square
Penny Nom lui répond.
The perimeter of a triangle 2014-08-21
Phyllis pose la question :
What is the perimeter of a five acre triangle with one side being 250 feet and the second side would be at a 90 degree angle.
Thank you.

Penny Nom lui répond.
Fencing around a 6 sided property 2014-07-10
Annette pose la question :
Hi, I've tried every way to figure this out and looked at your other acreage questions and still don't have an answer. It's my Birthday today and it would make me so happy to figure this out. I have this area I want fenced on my property and need to figure out how many acres it is to know if this guy is charging fare price for fencing.
It has 6 sides to it and measured in feet the sizes are: 1400 ft long
807 ft long
1060 ft long
300 ft long
310 ft long
400 ft long

Hope you can help me.
Thanks.
Annette

Penny Nom lui répond.
67 cubic yards in cubic metres 2014-07-09
gavin pose la question :
Convert 67 cu yards into cu metres
Penny Nom lui répond.
How many kilometers to a longitudinal degree? 2014-06-19
cherrielyn pose la question :
Assuming that earth is a sphere of radius 6380 km, what is the difference in the latitudes of two cities 270 miles apart positioned on the same meridian?

Thank you in advanced po! :)

Robert Dawson lui répond.
Cutting a hexagon from a disk 2014-04-05
Paul pose la question :
I am a machinist and sometimes need to make a hex from round material.
If I know the distance of the flat sides opposite one another of my hex, how can I calculate the size of material I need to turn to give me the right diameter to finish the part with six sides?

Penny Nom lui répond.
The parameterisation of of a curve 2014-04-01
Eunice pose la question :
Let C be the path along the curve given by y−80=−5x2 that moves from the point (5,−45) to the point (0,80). Find r(t) the parameterisation of C in that direction as t∈[0,5]. How am I suppose to find the parametric of both x and y?
can I let x=t, then y=-5t^2+80? thanks

Penny Nom lui répond.
The diameter of the base of a cone 2014-02-23
elwin pose la question :
i have a sector of a circle that has 120 degree and 6 cm length. What will be the diameter of the base of the cone.
and what is the diameter of the angle is changed to 180.

Harley Weston lui répond.
How many cubic centimeters are in a cubic meter? 2014-02-11
merylin pose la question :
How many cubic centimeters are in a cubic meter? Use a sketch to explain your reasoning.
Penny Nom lui répond.
A square and a triangle 2014-02-02
Veronica pose la question :
The perimeter of a square piece of land is twice the perimeter of an equilateral triangukar lot, if one side of the square is 60 meters, find the length of a side of the triangle.
Penny Nom lui répond.
200,000 cubic metres 2013-11-06
John pose la question :
Hello: I'm a journalist reporting on the proposal to bury 200,000 cubic metres of radioactive waste below ground near Kincardine, Ontario. I'm trying to put this figure into some kind of perspective for readers -- particularly in the U.S., where most are unfamiliar with the metric system. I don't know whether there's any particular frame of reference that would be enlightening -- U.S. football fields, Olympic-sized swimming pools, etc. Can you help? Thanks very much in advance, John
Harley Weston lui répond.
The perimeter of a rectangle 2013-10-24
sana pose la question :
if the length is given 70 m and the breadth is given as 40 m find the perimeter of the rectangle
Penny Nom lui répond.
The perimeter of a 1.4 acre square 2013-08-29
Destini pose la question :
I cannot figure out what the perimeter for 1.4 acres of land in the shape of a square. I have tried and tried and eventually tried to use a calculator and I still can't figure it out. Can you help me? Thanks!
Destini

Penny Nom lui répond.
Fencing a parcel of land 2013-03-11
Koleen pose la question :
How much fencing do I need for an 56,850 parcel of land for a 15 stable horse barn
Penny Nom lui répond.
Dropping supplies from an airplane 2013-02-14
Claire pose la question :
An airplane flying at an altitude of 3500 feet is dropping supplies to researchers on an island. The path of the plane is parallel to the ground at the time the supplies are released and the plane is traveling at a speed of 300 mph.
a) write the parametric equations that represent the path of the supplies
c)How long will it take for the supplies to reach the ground?
d) how far will the supplies travel horizontally before they land?

Penny Nom lui répond.
The perimeter of an equilateral triangle 2012-12-14
shreyaarora pose la question :
if the area of on equilateral triangle is 24/3cm,then what is its perimeter
Penny Nom lui répond.
The perimeter of a rectangle 2012-09-19
aretha pose la question :
calculate the perimeter of a rectangle with the long side 462ft x 9inches and the short side 50% less.
Penny Nom lui répond.
The parameterization of a parabola 2012-04-27
Shawna pose la question :
I am having problems finding the parameterization of a parabola. The question I was given is: Find the work done if a particle moves from the points (-2,4) to (1,1) along the parabola y=x^2, while subject to the vector force of F=(x^3y,x-y). So how would I start with finding the parameterization of a parabola?
Penny Nom lui répond.
The area and perimeter of a rectangle 2012-03-01
RAJIB pose la question :
PEREMETER OF A RECTANGLE IS 24. FIND THE AREA ?
Penny Nom lui répond.
The difference in the latitudes of Lynchburg and Myrtle Beach 2012-01-26
Sarah pose la question :
Assuming that the earth is a sphere of radius 6378 kilometers, what it is the difference in the latitudes of Lynchburg, Virginia and Myrtle Beach, South Carolina, where Lynchburg is 400 kilometers due north of Myrtle Beach?
Robert Dawson lui répond.
The difference in latitudes of two cities 2012-01-18
Renee pose la question :
Assuming that the earth is a sphere of radius 6378 kilometers, what is the difference in latitudes of two cities, one of which is 600 kilometers due north of the other?
Robert Dawson lui répond.
Two shapes 2012-01-06
muhammad pose la question :
Question from muhammad, a student:

a boy has two pieces of wire each 99cm long .he bends them into the shapes shown below.calculate the radius of each figure,giving each answer to two decimal places.figures are one is semicircle and other on is half of the semicircle.

Harley Weston lui répond.
Triangles, area and perimeter 2012-01-01
Panny pose la question :
I saw a question asked on your board without an answer.
How do I find the area of a triangle any triangle if I only know the perimeter..

Penny Nom lui répond.
The circumference and area of a circle 2011-12-13
Mable pose la question :
A circle that going 70mi across using 22/7 I need the area,radius, and the circumference and how to set up the steps can you help?
Penny Nom lui répond.
The perimeter of a quarter circle 2011-11-10
sierra pose la question :
how do you figure the perimeter of a quarter circle that has a radius of 12
Penny Nom lui répond.
The dimension of the box in centimetres 2011-08-27
Eliza pose la question :
Find the dimension of the box in centimetres. Then find its volume in cubic centimeters. The box is 0.7m (l) 0.4 (h) 0.2 (w)
Penny Nom lui répond.
Fencing around a pool 2011-07-12
Anita pose la question :
The measurement of a swimming pool are 32 feet by 18 feet. How much fencing is needed if the fence is to be built 7 feet from each side of the pool?
Penny Nom lui répond.
The diameter of a cake 2011-06-06
nurul pose la question :
Best Bakery shop received an order from your school to bake a 5kg of round cake for teachers day celebration. if a kilogram of cake has a volume of 3800cm^3,and the height of cake is to be 7.0cm, calculate the diameter of the baking tray to be used to fit the 5kg cake ordered by your school?(used pai=3.142)
Penny Nom lui répond.
What is the perimeter if the area is 20 ft? 2011-05-10
Brooke pose la question :
What is the perimeter if the area is 20 ft?
Penny Nom lui répond.
The perimeter of a figure 2011-04-27
syed pose la question :
Hello I'm Syed from Bangladesh.

Please help me out! It is killing me.

The question is=2C find the perimeter of the figure. I can't find the perimeter.

I am enclosing the figure as an attachment.

Penny Nom lui répond.
Converting millimeters to centimeters 2011-04-04
Pat pose la question :
I need to convert 67 mm to centimeters how do I do this?
Penny Nom lui répond.
The perimeter of a rectangle 2011-04-04
aspen pose la question :
the perimeter of a rectangle is twice the sum of its length and its width. the perimeter is 40 meters and its length is 2 meters more then twice its width. what is the length?
Penny Nom lui répond.
Triangles with perimeter 16 cm 2011-02-22
Chong pose la question :
How many triangles (up yo congruence) with perimeter 16 cm and whose lengths of its side are integers?
Chris Fisher lui répond.
The perimeter of a semicircle 2011-01-29
Keith pose la question :
I have the perimeter of a semi circle of 37 but how do I calculate the diameter from this. This is all the information I have.
Penny Nom lui répond.
The diameter of a cylinder 2011-01-18
Gayle pose la question :
Given a cylindrical container that holds 45 imp. gallons and is 42 inches high, find the diameter
Penny Nom lui répond.
The perimeter of a quarter circle 2010-12-15
kim pose la question :
how do you figure the perimeter of a quarter circle that has a radius of 7 inches? I would like to have the explanation of how you figure it out. Thank you
Penny Nom lui répond.
The perimeter of a rectangle 2010-11-24
shericka pose la question :
a rectangle has a perimeter of 60cm. its length is 5 times greater than its width. what is its length?
Penny Nom lui répond.
The perimeter of a semicircle 2010-11-11
gayathri pose la question :
the area of semicircle is 1925sq.cm find perimeter
Stephen La Rocque lui répond.
Walking around an acre 2010-11-04
sa pose la question :
if you walk around 1.66 acres 10 times how many miles have i walked
Robert Dawson lui répond.
I have a sign size regulation I have to meet. 2010-10-26
Scott pose la question :
I have a sign size regulation I have to meet. The size is .6 meters squared. at first look this would be 2 ft x 2 ft. I believe it would be larger then that. Can you confirm what the size would be in inches please.
Penny Nom lui répond.
The base of an isosceles triangle 2010-10-24
Brian pose la question :
how can I find the base of an isosceles triangle from the height and the perimeter?
Penny Nom lui répond.
Limiting Cases in Geometry 2010-09-22
Niki pose la question :
Consider a rectangle inscribed in a circle with a radius or R. What are the possible perimeters for the rectangle?
Stephen La Rocque lui répond.
A circular 20 acre lake 2010-08-13
Ken pose la question :
I jog around a circular 20 acre lake. Please help me learn the distance of the perimeter of the lake so I will know my jogging distance. Thanks
Stephen La Rocque and Tyler Wood lui répond.
70 cubic meters of mulch 2010-07-30
zsuzsi pose la question :
i have 70 cubic meters of mulch to move and an 8 tonne truck to use how much tonnage is to 1 square meter so that i can work out how many trips i need to make
Penny Nom lui répond.
Converting kilograms to cubic metres 2010-07-16
Ilai pose la question :
I want to convert kg to cubic metre
Penny Nom lui répond.
The diameter of a circle 2010-06-24
John pose la question :
Piece of wire 72cm in length bent to make semicircle and diameter.Find length of diameter.Answer given 28cm.How is this arrived at?Looked at circumference in various ways but failed to understand how 28 cm was arrived at.Thanks for the help.
Robert Dawson lui répond.
The dimensions of a driveway 2010-05-07
Josh pose la question :
Dave and Jane have a new rectangular driveway. The perimeter of the driveway is 168 feet. The length is 12 feet longer than three times the width. What are the dimensions of the driveway?
Penny Nom lui répond.
The diameter of a circle 2010-04-30
Jimmy pose la question :
If I have a straight line with a known length and decide to make a circle out of this know length how would I calculate what the diameter of the circle would be
Penny Nom lui répond.
The perimeter of a rectangle 2010-04-12
Charlene pose la question :
The area of a rectangle is 390m^2. If its length is increased by 10m and its width is decreased by 6m, then its area does not change. Find the perimeter of the original rectangle.
Tyler Wood lui répond.
A roll of polythene 2010-04-04
Mary pose la question :
I have an area of 54square metres to cover how many rolls of 2m x 50m polythene do I need
Penny Nom lui répond.
The perimeter of a lake 2010-03-29
Bill pose la question :
I am trying to figure out the approx. perimeter of a 22 acre lake. Can I solve this by calculating the sq. ft. in 22 acres and then take the square foot to find out the sides of a 22 acre square and then add the sides together to get the perimeter?
Penny Nom lui répond.
The perimeter of a rectangle 2010-03-12
makiah pose la question :
A rectangle has a perimeter of 12 meters.If each side is a whole number of meters, what are the possible dimensions for the length and width?
Penny Nom lui répond.
The perimeter of a square 2010-02-18
richard pose la question :
My question is: In yards what is the perimeter of a piece of land totaling 6.2 acres. This land is a perfect square.
Melanie Tyrer lui répond.
The perimeter of a semicircle 2010-02-04
Sarah pose la question :
The perimeter of a semicircle is doubled when the radius is increased by 7. Find the radius of the semicircle.
Tyler Wood lui répond.
Fencing a garden 2010-02-04
kris pose la question :
How many meters of fencing do i need to enclose a garden if the yard is 26 meters long and half as wide?
Penny Nom lui répond.
The perimeter of a rectangle 2010-01-27
debbie pose la question :
how many dimensions are there to get a perimeter of 400 feet for a rectangle?
Penny Nom lui répond.
Area in square meters 2010-01-20
Carla pose la question :
A football field is 120 yd long and 50 yd wide. What is the area of the football field, in square meters?
Penny Nom lui répond.
The maximum area of a rectangle 2010-01-03
Mohammad pose la question :
determine the maximum area of a rectangle with each perimeter to one decimal place?
a)100 cm b)72 m c)169 km d)143 mm

Penny Nom lui répond.
Perimeter 2009-12-23
Jalyn pose la question :
I'm doing this math project comparing measurements and I want to know the perimeter of the Upper Peninsula of Michigan. Please Help me!

-Jalyn

Robert Dawson and Walter Whiteley lui répond.
A Lagoon, free form, inground swimming pool 2009-12-22
donna pose la question :
What is the linear footage of a 14 x 23, Lagoon, free form, inground swimming pool?
Robert Dawson lui répond.
Two similar pentagons 2009-11-16
louis pose la question :
The lengths of five sides of a pentagon are 1,3,5,7,and 12 units. If the length of the longest side of a similar polygon is 18 units, find the perimeter of the larger pentagon. I think I figured it out Not sure though.
Penny Nom lui répond.
A truncated cone 2009-11-11
Lucian pose la question :
I need to calculate the bottom inside diameter of a truncated cone.
The top insdie diameter is 1450mm.
The material is 6mm thick
The cone angle is 20 degrees
The slant length is 152mm
I would like a formula so that I can build a spread sheet

Penny Nom lui répond.
Grams per square meter 2009-09-30
MANISH pose la question :
how to calculate gsm given kg of 144 sheets and size in inches example 28" x 22" & 16.3 kgs = ?gsm (of 144 sheets)
Penny Nom lui répond.
Ms. Zoe's garden 2009-08-20
Carisa pose la question :
Ms. Zoe has a few dilemmas. She plants a garden each yr. & last yr. the rabbits ate her tomato plants. She has limited space which is 8ft by 4ft. & wishes to maximize the space. Ms. Zoe is considering 3 possible shapes. Those shapes are a rectangle, a triangle, or a polygon. She needs to buy fencing materia to enclose the garden & wants to get the biggest bang for her money. Each tomatoe plant req. 4 sq.ft to so she needs to know the # of plants to purchase & also needs to how much fence to buy. Basically I needs to know how to figure the perimeter & area for the polygon
Robert Dawson and Harley Weston lui répond.
Fencing five acres 2009-07-31
Aaron pose la question :
Ok So I need to order fencing for my property I have 5 acres and would like to fence in the perimeter, I cant for the life of me figure out how many feet of fencing to order for help please im an idiot.
Robert Dawson lui répond.
Height of a Flag Pole 2009-06-26
Jake pose la question :
Can anyone answer this I am very stumped. The flagpole on the roof of a Chocolate Factory is 13 cm in diameter and a perfect cylinder. If one end of a 2300-cm-long string is attached to the top of the flagpole, and wraps around the flagpole exactly 16 times before ending at the bottom of the flagpole, how tall is the flagpole? Need answer by Wednesday
Penny Nom lui répond.
Stones around a pool 2009-06-01
Jessica pose la question :
I am putting a yard pond in and I am trying to find out how many stones I would need for the perimeter.

The pond is 4ft (W) by ft (L) by 1.5ft (D)

Thank You,

Jessica

Penny Nom lui répond.
Area and perimeter 2009-05-07
Kelly pose la question :
Why do objects w/ the same exterior linear feet have different interior sq ft? I.e. a 25x25 room has 625 sqft while a 20x30 room has only 600 sqft? I can visualize that by cutting and moving parts of the rectangle, you loose a 5x5 section, but I just can't get my head around why.
Robert Dawson and Stephen La Rocque lui répond.
Decimeters and centimeters 2009-04-30
Jeannette pose la question :
I cannot convert because of a question that throws me off. For example, A mother African elephant avg's 250 dm in height. A newborn baby African elephant avg's 89cm in height. How many cm shorter is the baby African elephant than its mother? Which one do I convert first? in order to subtract the number from the baby?
Penny Nom lui répond.
A 27 inch diameter octagon 2009-04-04
Gary pose la question :
I am trying to build an octagon with 27 in outside diameter, i could make it 28 if it makes the calculations easier. Anyway i need to figure out the length of each individual piece of the octagon. I have tried and i can't get it, please help

Thanks Gary

Harley Weston lui répond.
The diameter of a roll of plastic 2009-03-24
truong pose la question :
hi. i have trouble to calculate the diameter of the plastic roll. the sheet is 765 m long and 0.8 mm to wrap around the core 400 mm in dia. please help me with the formula to calculate the dia of plastic roll, thanks in advance
Harley Weston lui répond.
The perimeter of a rectangle 2009-03-18
marylyne pose la question :
the perimeter of the rectangular is 70 meters. if the width is 40% of the length, find the dimensions?
Penny Nom lui répond.
Area and perimeter 2009-03-11
Keith pose la question :
My question I thought was simple until I couldn’t find an answer anywhere. I have a shape with lots of different curves and some straight lines. I know how many feet the perimeter is and that’s it. How am I able to find the square footage of an area if all I know is its perimeter length?

Thank you,

Keith

Robert Dawson lui répond.
Miles per hour to kilometers per second 2009-02-17
Tamara pose la question :
If a car goes 60 miles in an hour how many kilometres will it go in a second?
Penny Nom lui répond.
Fencing 5 acres 2009-02-06
bob pose la question :
How many feet of fencing is required to fence in 5 acres
Harley Weston lui répond.
Cubic centimeters and ounces 2009-02-06
Dawn pose la question :
1-- syringe contains 5.5cc of medicine & cost $13.50
1 --2 oz bottle of medicine cost $17.50

How many cc's in 2 oz, & which is the better deal?

Stephen La Rocque lui répond.
Shapes 2009-01-29
Rana pose la question :
I want to know about Circumference / Area / Volume of different shapes ie Circle , Oval , An Arc Trapezide etc
Robert Dawson and Harley Weston lui répond.
A cubical tank that is 8 m on a side 2009-01-25
gina pose la question :
Suppose one edge of a cubic tank is 8m; Find the volume of the tank in cubic meters
Penny Nom lui répond.
Perimeters and scale factors 2009-01-24
dennis pose la question :
I have this work that says how are the value of the ratios for the perimeters related to the scale factor? PLEASE HELP ME OUT
Harley Weston lui répond.
Parameterization of a curve 2009-01-10
stephanie pose la question :
Give parameterizations r(t)=x(t)i + y(t)j for the part of the parabola y=2x-x^2, from (2,0) to (0,0). Sketch the curve using arrows to show direction for increasing t. Essentially, i want to know how to determine the direction a particle is moving in for any curve, i have a vague idea using r'(t). Also, how do i parameterize? x=? and y=? Ans: x=2-t, y=2(2-t)-(2-t)^2
Harley Weston lui répond.
An area of 64cm squared and a perimeter of 64 cm. 2009-01-07
Dale pose la question :
i need to draw an object that has an area of 64cm squared and a perimeter of 64 cm. Can you help me out......
Robert Dawson lui répond.
Two rectangular plots have the same area 2008-12-23
Jason pose la question :
Two rectangular plots have the same area. The first has a perimeter of 40m while the second has a length 2m less than the first and a width 1m greater. Find the length and breadth of the first rectangle
Stephen La Rocque lui répond.
A standard bill on a highway 2008-12-19
Stephanie pose la question :
A standard bill on a highway has a perimeter of 14 feet. the length of the bill board is 6 feet greater than triple the width. What is the length? what is the width?
Robert Dawson and Penny Nom lui répond.
A circular plaque in a square box 2008-11-28
kmart pose la question :
A square box has a diagonal of length 640cm.It is to contain a circular wall plaque. What is the approximate diameter of the largest wall plaque that can be placed in the box?
Penny Nom lui répond.
The perimeter of a square acre 2008-11-27
Amanda pose la question :
What is the perimeter of a square acre? Answer in feet, please.
Penny Nom lui répond.
Walking around a square 3.50 acre property 2008-11-21
Ann pose la question :
How many times do I have to walk around the perimeter of my square 3.50 acre property to achieve 1 mile?
Penny Nom lui répond.
The height, base and perimeter of a triangle 2008-11-17
Zack pose la question :
How would i calculate the height of a triangle if the base is 10cm and the area is 50cm˛? If possible how would i calculate the length around the the triangle.
Penny Nom lui répond.
The diameter of a circle 2008-11-01
lupito pose la question :
a circle has a 30`sector,33pi.find the diameter of the circle.How do I set the equation up.
Victoria West lui répond.
The area of a square 2008-10-20
Danny pose la question :
Is it possible to use a circumference measurement to find the area of a square when all 4 corners have a 1.75" radius?
Harley Weston lui répond.
The area of a rug 2008-10-16
Natcha pose la question :
How can I convert the Carpet Roll Size to Square Meters. I have one Roll of carpet, (Quality is 2300 g/m2; 7 pitch/in, 9 rows/in; width: 2m) with dimension 0.5 m width and 4 m length. I needed to know that quantity of that Roll in Square Meters.
Penny Nom lui répond.
A roll of film 2008-10-16
John pose la question :
I need to know how to calculate the build up on a roll of film is calculated. Example: I start with a 6" diameter core, and I start winding .005" thick film on the core, so I am adding a total of .010" to the diameter each wrap. If I continue to do this for a total length of film of 3000 feet, what will the roll diameter be? So what I need is the formula to perform this type of calculation. Can you help me? I want to be able to plug the formula in a spread sheet and to be able to input a core diameter, a film thickness and a total length and get a roll diameter.
Penny Nom lui répond.
Millimeters to inches 2008-10-15
diane pose la question :
can you convert milliliters to inches?
Penny Nom lui répond.
The perimeter of a triangle 2008-09-29
Debbie pose la question :
How do I calculate the perimeter of a triangle if the lengths of two sides are equal and all the angles are known?
Harley Weston lui répond.
The length of one side of a square 2008-09-28
Mela pose la question :
The area of a square is 841cm˛.
What is the length of one side of the square?
What is its perimeter?

Penny Nom lui répond.
What is the perimeter of the rectangle? 2008-09-27
Pauline pose la question :
A rectangle has an area of 27 squared inches. the height is 3 times the base What is the perimeter of the rectangle?
Penny Nom lui répond.
144 square inches 2008-09-27
mike pose la question :
how much cm is in 144 square inches?
Penny Nom lui répond.
Sample variance: inches to centimeters 2008-09-22
Anita pose la question :
The average height of a sample of basketball players is 6 feet, 2 inches or 74 inches. The standard deviation of this sample of players is 4 inches. If each person's height were to be multiplied by 2.54, what would be the value of the resulting sample variance?
Harley Weston lui répond.
The sides of an octagon 2008-09-21
mark pose la question :
I need to know the measurements of an octagon with a inside diameter of 34.5 inches from side to side
Penny Nom lui répond.
The perimeter of an equilateral triangle 2008-09-11
Gerry pose la question :
How can I find the perimeter (length of side) of an equilateral triangle if the only information I have is the altitude?
Penny Nom lui répond.
The perimeter of a right triangle 2008-09-09
Shanon pose la question :
I know that A=1/2bh, but for the life of me cannot figure out my 6th graders math problem.

What is the perimeter of a right triangle whose area = 600 sq. ft.

Victoria West lui répond.
Half a circle 2008-09-04
brandon pose la question :
what are the area and perimeter and area of half a circle??
Penny Nom lui répond.
Converting centimetres to metres 2008-08-21
walter pose la question :
how do you convert the smaller unit to a decimal of the larger unit and then solve 17 m - 130 cm
Penny Nom lui répond.
Metres and miles 2008-08-18
Bill pose la question :
I enter a race that is 10,000 meters long,how many miles do i have to run?
Victoria West lui répond.
How many decimeters are in a meter? 2008-08-11
Julia pose la question :
How many decimeters are in a meter?
Penny Nom lui répond.
Cubic centimeters and milliliters 2008-07-07
Robert pose la question :
how many milliliters are in 750 cubic centimeters?
Harley Weston lui répond.
Kilometers per liters to miles per gallon 2008-06-26
margaret pose la question :
we travelled 130 kilometers on 10 liters of gas. How many miles to the gallon did I get
Penny Nom lui répond.
The diameter of a sphere 2008-06-15
Scott pose la question :
The volume of a sphere is 6000cm cubed. What is the diameter of the sphere?
Penny Nom lui répond.
A right angled triangle 2008-05-16
bryan pose la question :
The sides of a right angled triangle are x, x+1, x+2 cm. Find the perimeter.
Penny Nom lui répond.
The sides of an octagon 2008-05-07
Frank pose la question :
Question from Frank, a parent: Hi, Need to lay out a 10 ft. diameter octagon on the ground. What is the length of the sides ? And the angles ?
Harley Weston lui répond.
Fencing a triangular field 2008-04-29
Julieta pose la question :
The area of a field shaped like a triangle is 750yards squared. One leg of the field is fenced with wood costing $5/yd. The remainder of the perimeter of the field is fenced with steel costing $10/yd. The perimeter of the field is 150yards. the total cost of the fencing is $1200.
a. What is the length of the leg fenced with wood?
b. what is the length of the leg fenced with steel?

Penny Nom lui répond.
The ratio of their perimeters to two regular hexagons 2008-04-29
td pose la question :
Two regular hexagons have areas of 54 square root of 3 and 150 square root of 3, what is the ratio of their perimeters?
Stephen La Rocque lui répond.
The diameter of a circle 2008-04-28
Mary pose la question :
What is the diameter of a circle if the area is 132.7 square meters? I have tried the formula C=2 times pi radius and came up up 21.1. I also tried C = pi times d and came up with 42.26. The answer in the book says 13. How did they get this answer? Thank you for your help.
Penny Nom lui répond.
A circle inscribed in a triangle 2008-04-26
Amar pose la question :
I have been given a circle inscribed in a triangle and have been told to prove that the ratio of the perimeter of the triangle to the circumference of the circle is the same as the ratio of the area of the triangle to the area of the circle. How would this be done?
Stephen La Rocque and Walter Whiteley lui répond.
The perimeter of a half acre square 2008-04-20
s pose la question :
Measured in feet. What would be the perimeter of a square area of land measuring 1/2 acre?
Penny Nom lui répond.
The perimeter of a rhombus 2008-04-18
susana pose la question :
how do you find the perimeter of a rhombus?
Penny Nom lui répond.
Two intersecting circles 2008-04-17
Muhammad pose la question :
Hi, how can we find the perimeter and area of the region common to two intersecting circles of radii 6 cm and 4 cm with centers 7 cm apart.
Harley Weston lui répond.
Perimeter, area and diagonals of a rectangle 2008-04-03
jenea pose la question :
I have to find the perimeter as well as the area of a rectangle when given the diagonals are 12 units long and they intersect at a 60 degree angle. how do i find both the area and perimeter; do i use the 30 60 90 triangle rule?
Stephen La Rocque and Penny Nom lui répond.
A 100 acre square pasture 2008-04-03
Richard pose la question :
I need to know how many lineal feet there is around a 100 acre pasture that is square in shape. I am no longer able to get out and measure it myself, and cannot remember the math to compute it.
Penny Nom lui répond.
Ounces and grams 2008-04-02
Rakesh pose la question :
7.2 oz per sq. yard equals ? __ grams per sq. meter

How I can measure the weight of a Jeans fabric (in oz)? And what is the rellation between grams and oz?

Penny Nom lui répond.
The rectangle with smallest perimeter 2008-04-01
nicole pose la question :
when given an area,squares are the rectangles with the smallest perimeter write the length and width of the rectangle with the smallest perimeter
Penny Nom lui répond.
Cost per square metre 2008-03-31
sandy pose la question :
if something measures 7m x 3.6m with a depth of 1 - 1.5m and the total cost is 52 500.00, what is the cost per square metre
Penny Nom lui répond.
Circles and semicircles 2008-03-23
sally pose la question :
Hi i am sally ,

i need to know what is the formula of :

Find perimeter and area of a semicircle ?

Find the area of a circle whose circumference ?

Penny Nom lui répond.
How large is a container that will hold 3.5 cu meters? 2008-03-05
Robert pose la question :
If a company allows you to ship personal belongings while on an over seas assignment and the figure is 3.5 cubic meters. Just how much is the total area in square feet?? 10X10X10 or??? I just wanted to understand the size of a container that would hold 3.5 cubic meters!!
Harley Weston lui répond.
The diameter of a circle 2008-03-03
Kathie pose la question :
I know the length of the curved portion of a semi-circle is 200 ft. but I need to find the diameter to get a total perimeter and area. How do I find the diameter to get the perimeter?
Penny Nom lui répond.
150 decimeters is how many centimeters 2008-02-29
gayle pose la question :
150 decimeters is how many centimeters
Penny Nom lui répond.
The perimeter of a sector of a circle 2008-02-28
erica pose la question :
What is the perimeter of a sector if the radius is 18 and the middle arc is 150?
Penny Nom lui répond.
The perimeter of a shape 2008-02-17
olivia pose la question :
Hello I've forgotten how to work out the perimeter of a shape. can you help me out????
Penny Nom lui répond.
The perimeter of a semicircle 2008-02-02
Lisa pose la question :
How do you find the perimeter of a semi circle when you are only given the diameter, say 24 units?
Penny Nom lui répond.
Linear feet to metres 2008-01-25
Jillian pose la question :
i have a measurement of something in linear feet. i dont know what a linear foot is so i want to convert it to meters to have an idea. how do i convert.
Penny Nom lui répond.
The smallest possible perimeter 2008-01-23
RS pose la question :
If two points of a triangle are fixed, then how can the third point be placed in order to get the smallest possible perimeter of the triangle.
Chris Fisher and Penny Nom lui répond.
How many meters/kilometers/millimeters would that be? 2008-01-17
chantal pose la question :
if a ocean/lake/river is 250meters from where you are, how long would it take to get to shore? how many meters/kilometers/millimeters would that be?
Penny Nom lui répond.
The perimeter of a figure 2008-01-11
Kassandra pose la question :
I am trying to find out the perimeter of a semicircle. I do what the book says but, I always get it wrong. I usually don't have problems with math until now.

There is half a circle. It shows that the radius of the circle is 4 units.

And then below the half circle there is a square below it. The angles are right angles and the width is also 4 inches. I get close to the answer but, am usually off.

Penny Nom lui répond.
The perimeter of circle 2007-12-15
shaquilla pose la question :
what is the perimeter of a circle.
Penny Nom lui répond.
The dimensions of a rectangle 2007-12-12
tara pose la question :
The length if a rectangle is 5 feet less than twice its width. The perimeter of the rectangle is 38 feet. let w represent the width. write an equation for the perimeter of the rectangle in terms of w. Then solve the equation to find the length and width o the rectangle.
Penny Nom lui répond.
Find the perimeter of the original rectangle. 2007-12-11
Hannah pose la question :
The area of a rectangle is 360 square meters. If the rectangle's length is increased by 10 meters and the width is decreased by 6 meters, its area does not change. Find the perimeter of the original rectangle.
Melanie Tyrer lui répond.
A radius and a tangent to a circle 2007-12-04
elizabeth pose la question :
show that the radius of a circle meets a tangent line to the circle in a 90 degree angle. hint: start by assuming they are not perpendicular and at a contradiction.
Penny Nom lui répond.
The diameter of a gasket 2007-12-01
Jorge pose la question :
I have an application where I am using a circular silicone gasket. I have the total length but would like to calculate the diameter with the given length. What formula should be used? We receive these gaskets in a roll and cut them about 21 inches and glue the ends together to make it one piece. I would prefer to purchase these already cut and glued but require a diameter. If I had the overall diameter from a 21 inch length gasket, I can look on-line for a part that comes close to the diameter.

Jorge

Harley Weston lui répond.
The perimeter of Wisconsin 2007-11-26
Kyle pose la question :
I am doing a project and I need to figure out the total perimeter of wisconsin in miles and only know the square miles of Wisconsin which is 65,503 and I need to get that to miles I have no clue how to do this. I've looked all of the computer for answers but got none. Thanks
Leeanne Boehm and Penny Nom lui répond.
How many yards of fencing do I need? 2007-11-16
Terrie pose la question :
I have to order fencing for a 25-acre, rectangular field.One side of the field is 1/4 mile. How many yards of fencing do I need to enclose the field?
Stephen La Rocque lui répond.
How many centimeters equal one meter? 2007-11-15
Sherrie pose la question :
How many centimeters equal one meter?
Penny Nom lui répond.
How do i convert milliliters to grams for water and also for copper sulfate (CuSO4)? 2007-11-11
jenn pose la question :
how do i convert milliliters to grams for water and also for copper sulfate (CuSO4)?
Harley Weston lui répond.
Cubic centimeters to cubic yards 2007-11-10
Logan pose la question :
if i have 188.4cm^3 of concrete how do i change it into cubic yards?
Penny Nom lui répond.
Meters per second to miles per hour 2007-11-08
Niecey pose la question :
If Greg was timed at 0.91 seconds for 10 meters running the 100 meter dash, at that speed, could he pass a car traveling 15 miles per hour in a school zone?
Penny Nom lui répond.
The width of a rectangle 2007-11-07
BJ pose la question :
The perimeter of a rectangular field is yards. If the length of the field is yards, what is its width?
Penny Nom lui répond.
The perimeter of a circle sector 2007-10-25
sara pose la question :
Hi! The area of a sector of a circle is 25 sqcm. The radius of the sector is 6 cm. Calculate the perimeter of the sector. Many thanks!!!
Penny Nom lui répond.
parabolic arch 2007-10-24
ABHILASH pose la question :
How find parabolic arch perimeter.
Harley Weston lui répond.
The perimeter of an acre 2007-10-22
juliana pose la question :
how many times can i walk around 2 acres of land to equal 1 mile?
Penny Nom lui répond.
The diameter of an octagon 2007-10-12
Lewis pose la question :
How do I calculate the dimension of the diameter of an Octagon when each leg has a dimension of 60 feet?
Penny Nom lui répond.
Triangle perimeter and area 2007-10-05
divakar pose la question :
The sides of the triangle are integers. The perimeter is 8. What is the area?
Stephen La Rocque lui répond.
Find the area of the traingle 2007-10-02
Indrajit pose la question :
The perimeter of a triangle is equal to the perimeter of a semicircle of radius 35 cm.The ratio of the triangles is 5:6:7. Find the area of the triangle? [pie = 22/7]
Stephen La Rocque lui répond.
Cubic meters, square feet and office space 2007-09-25
Kathryn pose la question :
Can someone please help and let me know how do you convert 11 cubic meters into square footage?
Steve La Rocque and Harley Weston lui répond.
Metres per minute to miles per hour 2007-09-20
Angela pose la question :
If a person is traveling 150 meters per minute, what is their speed in miles per hour?
Stephen La Rocque and Harley Weston lui répond.
The perimeter of a regular polygon 2007-09-18
Ashwynn pose la question :
why does the area of regular polygons with a perimeter of 1000m increase as the number of sides increase?
Stephen La Rocque lui répond.
The perimeter of a semi-circle 2007-09-11
Confused pose la question :
What is the formula for the perimeter of a semi-circle? Can you please help me out!!! I need this answer by tomorrow.
Stephen la Rocque lui répond.
Yards by yards to square metres 2007-09-10
Julie pose la question :
I need a formula to translate linear yards so 36" by 54" to square meters. So first I need to square the yard and translate it to square meters.
Stephen La Rocque and Penny Nom lui répond.
A right angles triangle 2007-09-05
Daryl pose la question :
I have a right-angled triangle. two of its sides are 12.6cm. The third/last line is missing. How can I find the length of the last line?
Stephen La Rocque and Penny Nom lui répond.
Finding the perimeter of a park 2007-08-25
KT pose la question :
what are three formulas you can use to find the perimeter of a square park measuring 150 ft by 150 ft?
Penny Nom lui répond.
How do I find out how much cubic meters will spread over meter squared area? 2007-08-16
Derek pose la question :
How do I find out how much cubic meters will spread over meter squared area?
Penny Nom lui répond.
Area and perimeter 2007-08-16
sheryl pose la question :
a 50*70 horse pen is 240 feet and 3500 square feet a 60*60 horse pen is 240 feet and 3600 square feet why is there a 100 square feet difference?
Penny Nom lui répond.
Finding the perimeter when you know the area 2007-08-15
Lynne pose la question :
If a lot's area size is 17,642 square feet, how do I figure the perimeter?
Stephen La Rocque lui répond.
The area and perimeter of a rectangle 2007-08-15
Brooklyn pose la question :
Is there a way to find the perimeter of a rectangle if you have the area, or vice versa? If so, what is the equation?
Leeanne Boehm and Penny Nom lui répond.
How many square meters are there? 2007-08-13
jane pose la question :
if a room is 4meters by 5meters,how many square meters are there?
Penny Nom lui répond.
Fencing cost 2007-08-11
Ethel pose la question :
If ann wants to put up a fence for her dog around her 75ft x 55ft retangular yard, the hardware store has fencing materials for 7.50 per yard. How much would it cost her to purchase fencing material?
Stephen La Rocque lui répond.
Diameter of an octagon 2007-08-07
Bree pose la question :
I am trying to find the diameter of a octagon with 20' sides . What formula do I use?
Stephen La Rocque lui répond.
The perimeter of a sign 2007-08-04
arul pose la question :
Hi
Please help me with the below question. The outline of a sign for an ice-cream store is made by placing 3/4 th of the circumference of a circle with radius 2 feet on top of an isosceles triangle with height 5 feet, as shown above. What is the perimeter, in feet, of the sign?
(A) 3pi+ 3 sqrt3
(B) 3pi + 6 sqrt3
(C) 3pi + 2 sqrt 33
(D) 4pi + 3 sqrt3
(E) 4pi + 6 sqrt3

Penny Nom lui répond.
An athletic track 2007-07-30
tammy pose la question :
The inner boundary ABCDEF of an athletic track cinsists of two straight parts each 90m long and two semi circular ends as shown in the diagram.If the perimeter of the inner boundary is 400m, calculate the diameter AE of the inner semi circle.

Part 2. If the track is 3.5m wide an athlete starts the 400m run at X and remains in the outer lane . He finishes at Y(1) Calculate the outer diameter YZ
(2)The distance XY (take pie as 22/7)

Penny Nom lui répond.
Cubic metres of topsoil 2007-07-25
Laurie pose la question :
How do I convert cubic meters to square meters?
Harley Weston lui répond.
Proof that any side of a triangle is less than half the perimeter. 2007-07-07
Omkar pose la question :
Any side of a triangle is smaller than half of its perimeter, prove this in short ?
Stephen La Rocque lui répond.
Can't find circumference of an ellipse 2007-07-06
Michele pose la question :
I need to figure the circumference of an oval and I know the height and width.
Penny Nom lui répond.
How do I convert inches to mm in my head? 2007-06-27
philip pose la question :
Hi, I would like to know how to convert inches to mm in my head, I use socket sets and want to know an easy way to work out what 3/16, 7/32 is in mm. Thanks Phil
Harley Weston lui répond.
The perimeter of a triangle 2007-06-20
chelsie pose la question :
how do i find the perimeter of a triangle given the area, base, and height?
Penny Nom and Walter Whiteley lui répond.
Area of a circular garden 2007-06-18
Cynthia pose la question :
Hi is this the correct formula for this problem? What is the approximate area of a circular garden that is 20 feet in diameters?
Stephen La Rocque lui répond.
A circle and polygon with equal perimeters 2007-06-05
matthew pose la question :
Why does a circle have the largest area of any polygon when the perimeter is always 1000m for every polygon?
Stephen La Rocque and Penny Nom lui répond.
The circumference of an ellipse 2007-05-25
Graham pose la question :
I have an ellipse that I need to find the circumference of. It is 40ft at its longest point and 25ft at its shortest
Penny Nom lui répond.
Area of a hexagon (three ways to find it) 2007-05-24
Josh pose la question :
I have to work out the area of a hexagon when I know that the perimeter of it is 1000m. I have tried many different ways but I get different answers.
Stephen La Rocque lui répond.
Swimming pool water 2007-04-12
tina pose la question :
How much water does a 24' round, 4' deep swimming pool hold?
Haley Ess lui répond.
Find the expression that represents it perimeter. 2007-04-01
Amy pose la question :
A rectangle has sides of 3x-4 and 7x+10. Find the expression that represents it perimeter.
Steve La Rocque and Haley Ess lui répond.
Find the length and width of the football field 2007-03-19
Bobbi pose la question :
The Length of a football field is 67 yards greater than the width. The perimeter of the field is 346 yards. Find the length and width of the football field
Haley Ess lui répond.
Conversion 2007-03-16
Andrew pose la question :
If a lawn is 95.3 square yards, how do I convert that to square meters?
Stephen La Rocque lui répond.
The dimensions of a rectangle with least perimeter for given area 2007-03-14
Karlianna pose la question :
find dimensions of a rectangle with least perimeter for given area
A) 30cm2
b) 50cm2

Penny Nom lui répond.
How many feet is on one side of an acre? 2007-03-07
Melinda pose la question :
How many feet is on one side of an acre?
Melanie Tyrer lui répond.
Walk around a 14 acre perimeter 2007-02-24
Maria pose la question :
How many times would you have to walk around a 14 acre perimeter in order to walk 1 mile?
Penny Nom lui répond.
Centimeters to cubic meters and grams to kilograms 2007-02-14
Colleen pose la question :
A box of balls measures 120cm by 20cm by 20cm and weighs 48 g.
One thousand boxes = x cubic meters and weighs x kilograms.
Also, one million boxes = x cubic metes and weighs x kilograms.
One billion boxes = x cubic meters and weighs x kilograms. Solve for x.

Stephen La Rocque lui répond.
Square centimeters 2007-02-12
Ivan pose la question :
how many square centimeters are in a rectangle that is 210 centimeters long by 39 centimeters wide.? thank you
Karen McIver and Melanie Tyrer lui répond.
Perimeter of an octagon inside a circle 2007-02-08
Courtney pose la question :
a regular octagon is inscribed in a circle with a radius of 12 cm. find the perimeter of the octagon?
Stephen La Rocque lui répond.
Converting sq inches to sq millimeters 2007-02-08
Michael pose la question :
If I have 1/32 sq inches, what does that equal in sq millimeters?
Stephen La Rocque lui répond.
The perimeter and area of a right angled triangle 2007-01-31
Naveen pose la question :
I need to calculate the area of a right angled triangle. However the measurements of the 3 sides is missing. All we are told is that the perimeter of the triangle is 1000cm.
Penny Nom lui répond.
Square meters and cubic meters 2007-01-30
Fiel pose la question :
How do i convert square meter to cubic meter?
Penny Nom lui répond.
converting square miles into square meters 2007-01-27
Susan pose la question :
how do you convert square miles into square meters
Stephen La Rocque lui répond.
A 140 acre rectangular piece of land 2007-01-27
Dave pose la question :
What is the perimeter of a 140 acre rectangular piece of land that is three times longer that it is wide?
Penny Nom lui répond.
2000 acres 2007-01-22
Kyle pose la question :
if you walked around around 2000 acres how many feet did you walk?
Stephen La Rocque lui répond.
Find the area of the rectangle 2007-01-09
Mike pose la question :
The perimeter of a rectangle is 72 in. The base is 3 times the height. find the area of the rectangle?
Penny Nom lui répond.
I want to convert milliliters into grams. 2006-12-14
Kenchotenzin pose la question :
I want to convert milliliters into grams.
Penny Nom lui répond.
What is the diameter of the planet? 2006-12-07
Niall pose la question :
In April 2005, scientists claimed to have captured light from an extrasolar planet orbiting a brown dwarf in the constellation Hydra some 230 light-years from Earth. The scientists believe the planet is about five times the mass of Jupiter.

Assume the planet has the same density as Jupiter. What is the diameter of the planet?

Stephen La Rocque lui répond.
Converting cubic meters to gallons and liters 2006-11-16
Lorne pose la question :
I have a large tank and I would like to know the formula for the conversion. And do you have any other info on web sites that have conversion tools as most of the tools are in u.s and I live in Canada and need the metric conversions.
Stephen La Rocque lui répond.
The rate of change of the perimeter of a square 2006-11-07
Karli pose la question :
Find the rate of change of the perimeter of a square with respect to its area.
Stephen La Rocque lui répond.
How do I calculate the roll diameter? 2006-11-05
Bob pose la question :
if I have the RPM of the roll and the thickness of the web coming off the roll and the mm/min of the web how do I calculate the roll diameter?
Stephen La Rocque lui répond.
Newton meters and ft-lbs 2006-11-04
Michael pose la question :
What is the correlation between Newton meters and ft-lbs of torque? If an engine has 100ft-lbs of torque,what would that equate to in Newton meters?
Stephen La Rocque lui répond.
The history of the meter 2006-10-23
Caitlyn pose la question :
i'm an 8th grade student and i have a lab report due and i really need to find out more about the history of the meter.
Stephen La Rocque lui répond.
How do you find the length and width of a rectangle if you know ... 2006-10-15
Anne pose la question :
How do you find the length and width of a rectangle if you know the perimeter of the rectangle is 48 m and the area is 144 m squared?
Stephen La Rocque and Penny Nom lui répond.
The perimeter of an acre 2006-09-23
George pose la question :
I am trying to figure out how many feet go around the perimeter of one acre of land for a fence.
Stephen La Rocque and Penny Nom lui répond.
How do I determine the length of the lot? 2006-09-22
Dylan pose la question :
If a rectangular lot's perimeter is 340 feet, the width is 70 feet. How do I determine the length of the lot?
Penny Nom lui répond.
Parameters 2006-09-15
Chase pose la question :
What is the meaning of the word "parameters" when used in reference to Algebra.
Penny Nom lui répond.
How do you get 15 square units to make a perimeter 16 units? 2006-09-12
A student pose la question :
How do you get 15 square units to make a perimeter 16 units?
Stephen La Rocque and Penny Nom lui répond.
Converting sq ft to sq meters 2006-08-03
JB pose la question :
I would like to convert 2700 square feet into square meters.
Penny Nom lui répond.
Find the radius knowing the chord length and... 2006-07-28
Jim pose la question :
If I know the length of a chord and its distance from the diameter, how do I calculate the radius of the circle?
Stephen La Rocque lui répond.
A 9 foot diameter circle 2006-07-02
Lisa pose la question :
How do I calculate 9 foot diameter measurement in total feet??
Stephen La Rocque lui répond.
how to convert square meter to meter 2006-06-20
Wan pose la question :
Pls advice
Stephen La Rocque lui répond.
I have a trench to fill with concrete 2006-06-11
A builder pose la question :
i have a trench to fill with concrete the size is [57 feet long .x 18 inches wide. x 39 inches high.]would like to know how much concrete should i order.
Penny Nom lui répond.
The volume of a roll 2006-06-09
Yogesh pose la question :
I have a roll which height is 63 inches & width is 11 inches i want to know that how to calculate the cubic meter of this roll
Penny Nom lui répond.
The perimeter of a pool 2006-06-05
Troy pose la question :
How many Linear feet would a pool be if the pool was 18 by 38 foot oval
Penny Nom lui répond.
The length of the diameter 2006-05-18
Steven pose la question :
A circle has a circumference of 312in. Find the length of its diameter to the nearest integer?
Penny Nom lui répond.
If the perimeter of a square is 1 foot, what is its area? 2006-04-27
Larry pose la question :
If the perimeter of a square is 1 foot, its area is how many square inches?
Stephen La Rocque lui répond.
Perimeter of a triangle atop a square 2006-04-13
Mary pose la question :
There is an (irregular) pentagon that is made up of a square and a triangle. The triangle is directly on top of the square. The triangle is a right triangle. One of the angles is 45 degrees. One of the sides of the triangle is 4. What is the perimeter of the pentagon?
Penny Nom lui répond.
A 20 foot container 2006-04-05
Karen pose la question :
can you tell me how many cubic square meters are in a 20 foot container
Stephen La Rocque lui répond.
If a circle is elongated into an oval .. 2006-03-16
Bruce pose la question :
If a circle is elongated into an oval, with constant circumference, does the area remain constant?
Walter Whiteley lui répond.
Rectangles with the same perimeter 2006-03-14
Kristine pose la question :
If two rectangles have the same perimeter, will they also have the same area? Why
Penny Nom lui répond.
the size of a lot is 300 sqm, what is the square feet conversion? 2006-02-11
JC pose la question :
the size of a lot is 300 sqm, what is the square feet conversion?
Penny Nom lui répond.
The diameter of a pipe 2006-01-27
An other pose la question :

I know the base length of my arc (10 inches) - I also know the height at the center to the arc (2 inches). I don't think the end is at the midpoint tho. How do I figure out how long the arc length is?

My question involves being able to cut a round pipe into an arc that is 10 inches wide and 2 inches tall. I need to know the smallest diameter pipe to buy in order to fulfill these requirements.


Penny Nom lui répond.
The circumference of a larger circle is twice the circumference of a smaller circle. 2006-01-20
Amanda pose la question :
The circumference of a larger circle is twice the circumference of a smaller circle. What is the ratio of the radius of the smaller circle to the diameter of the larger circle?
Penny Nom lui répond.
40 acres= how many square meters? 2006-01-07
Janelle pose la question :
40 acres= how many meters?
Penny Nom lui répond.
How many millimeters are in 12 feet? 2006-01-06
Hunter pose la question :
How many millimeters are in 12 feet?
Penny Nom lui répond.
2800 sq meters 2005-12-27
Roger pose la question :
I am going to buy some land and its 2800 sq meters. Is it a acre?
Penny lui répond.
Cubic metres to cords 2005-12-22
Duncan pose la question :
I have a quote of $2.95 per cubic metre of roundwood but I need the conversion equation to convert the above to a $ per cord.
Penny Nom lui répond.
The perimeter of a collection of squares 2005-12-11
Catherine pose la question :
using 12 squares, make a number of patterns (squares joined). Find the perimeters. Find out how many points in the shape have four radiating lines i.e. are two lines intersecting. Write an equation to state the relationship between the lines and the perimeter.
Penny Nom lui répond.
what is 5'7 2005-11-26
A student pose la question :
what is 5'7" inches in cm?
Harley Weston lui répond.
Inches and millimeters 2005-10-08
Ron pose la question :
You know they say 14mm = 9/16" or something of that nature, i need to know exactly how this is done.
Chris Fisher lui répond.
Inches and millimeters 2005-09-30
A student pose la question :
how many inches are there in mm? For example 30x40 mm = how many inches.
Penny Nom lui répond.
The volume of soil needed to fill a planter 2005-08-10
Phil pose la question :
I need to calculate the volume of soil needed to fill a planter box that measures - 880mm W x 6080mm L x 900mm D.
Penny Nom lui répond.
The circumference of an oval pool 2005-05-18
John pose la question :
I have an oval pool of which I am trying to find the circumference. it is 38 feet long and 19 feet wide
Penny Nom lui répond.
Centimeters, millimeters and milliliters 2005-04-19
A student pose la question :
How many milliliters in a centimeter?
Penny Nom lui répond.
The diameter of a 800 km circle 2005-01-22
Mechelle pose la question :
What is the diameter of a 800 km circle?
Penny Nom lui répond.
Perimeter and area of a semi_circle 2004-09-18
A student pose la question :
I want to know how to find the perimeter and area of a semi-circle and a quarter-circle.
Penny Nom lui répond.
Cubic meters 2004-08-31
Brad pose la question :
I have a 10' x 10' x 12" area & need to find the cubic meters, how do I do this?
Penny Nom lui répond.
130 cc. is ? 2004-08-20
Ayrn pose la question :
130 cc. is ? I have to put 130cc. of petroleum in a bucket how much exactly is that? Also 110 cc.? I have to also put 110cc. wood alcohol in a bucket aswell!
Penny Nom lui répond.
Combien de litre y a t'il dans un M3 2004-07-30
Un eleve pose la question :
j'aimerais savoir combien de litre y a t'il dans un M3. car je dois mettre un produit spécial dans une piscine.
Claude Tardif lui répond.
The perimeter of a triangle 2004-05-21
A student pose la question :
In a triangle i have the length of a line and it's opposite angle.how can i calculate perimeter?(the angles are not right)
Penny Nom lui répond.
425 cc's of a saline solution 2004-03-30
Julie pose la question :
425 cc's of a saline solution is equal to how much in lbs-weight??
Harley Weston lui répond.
Area and perimeter 2004-03-12
Sandy pose la question :
The rectange has an area of M square units and a perimeter of 2M units. What is the value of x?

The length of the rectange is 3, while the width of the rectange is x-1.

Penny Nom lui répond.
The area of a lot 2004-03-09
Dave pose la question :

If our lot is 192.71 x 138.79 x 158.74 x 103.08

Question is what percentage of an acre is our lot?


Penny Nom lui répond.
The dimensions of a rectangle 2004-02-21
Jane pose la question :
A rectangular label has an area of 176cm2 and a perimeter of 54cm. Find the dimensions of the label.
Penny Nom lui répond.
Areas, perimeters and derivatives 2004-02-15
Geoff pose la question :
A recent lecture in my calculus class led me to realize that the derivative of the area of a circle, with respect to the radius is equal to the circumfrence. This also holds true for the relationship between the volume of a sphere and the surface area of that sphere:
why do these hold true? why is it only for circular objects?

Harley Weston lui répond.
Ounces into cubic centimeters 2004-01-27
A student pose la question :
how do you convert ounces into cubic centimeters? Ex: how does 12 oz. change into cc.
Penny Nom lui répond.
A wooden deck around a pool 2003-07-09
Dat pose la question :
A pond is enclosed by a wooden deck that is 3 feet wide. The fence surrounding the deck is 100 feet long.
  1. If the pond is square, what are its dimensions?

  2. If the pond is rectangular and the length of the is three times its width, what are the dimensions of the pond?

  3. If the pond is circular, what is the diameter of the pond?

  4. Which pond has the most area?

Penny Nom lui répond.
Setting up a word problem 2003-06-30
Christie pose la question :
A rectangular corral is forty feet longer than it is wide. If the perimeter is 220 feet, determine the length and width of the corral.
Penny Nom lui répond.
An inch and a millimeter 2003-06-21
Greg pose la question :
The conversion factor for inches to millimeters 25.4 It strikes me as very odd that it's not some infinite decimal. I could understand this if one system was derived from the other but as I understand it they were derived independently. Is the conversion 25.4 or 25.4000XXXXXXX? If it's just 25.4 then how did that happen?
Harley Weston lui répond.
A radio controled car 2003-06-08
Robert pose la question :
I have a radio controled car (scale size 1/43). This car can travel 490 ft. per minute. I would like to know how fast that is at that scale size in miles per hour (and Kilometers per hour)?
Penny Nom lui répond.
Millimeters to inches 2003-05-28
Brian pose la question :
I am a music instructor just trying to get a horn repaired. I have been trying to get replacement pearls for a keyboard of a horn. The mechanic needs the measurement in inches. The calibers say that the size is .115 mm can you tell me what that is in inches, I tried your formula of 2.54 mm per inch but this is a smaller size and I cannot seem to figure it out.
Penny Nom lui répond.
Circumference 2003-05-09
A parent pose la question :
Find the circumference use 3 1/7 for pi

1. r= 28 ft.
2. D=98 cm

Penny Nom lui répond.
Finding the area when the perimeter is known 2003-02-28
Yvette pose la question :
What is the size of an area in sqare feet when the perimeter totals 842 feet.
Sides are 190ft+180ft+200ft+54ft+118ft+100ft.

Penny Nom lui répond.
______cm=0.048km 2003-02-27
Antonette pose la question :
______cm=0.048km
Penny Nom lui répond.
Wrap a rope around the equator 2003-02-12
Ali pose la question :
If you take a rope and wrap it around the equator and then overlap it 6ft. and cut off the extra then you loosen it up so the ends meet how far would it stand off the ground?
Penny Nom lui répond.
Millilitres and millimeters 2003-02-09
Iwan pose la question :
I was just wondering whether a millilitre was equal to a millimetre, if not, what is there difference.
Penny Nom lui répond.
Triangle perimeter 2003-01-30
An Aunt pose la question :

Hi I'm the aunt of a middle school child. He need help with two problems and I don't understand how to show he how to do them. Can you help me.

  1. How do you find the perimeter for X=4, X=0.7, and X=5/6?

  2. And an acute triangle that bottom is (3X+1) cm, left side is (X+4) cm and the right is (2X+5)cm.

Can you show me not only the answer but also the steps that you used.


Penny Nom lui répond.
Units 2002-12-12
Debbie pose la question :
The general equation for a parabola is y = ax 2 + bx + c, where a, b, c are constants. What are the units of each constant if y and x are in meters?
Penny Nom lui répond.
Cubic centimeters 2002-11-07
Rita pose la question :
Was in emergency room yesterday-MD aspirated 40cc of fluid from my knee--what does a "cc" equate to?
Penny Nom lui répond.
An octagon of perimeter 1,000 meters 2002-11-05
Stephen pose la question :
my son has to work out the area of a octagon with a outside perimeter of 1,000 metres,
Penny Nom lui répond.
Kilometers to miles 2002-10-09
A student pose la question :
how many miles are in 16 kilometers?
Leeanne Boehm lui répond.
A million sheets of 30 cm long paper 2002-09-15
Jennifer pose la question :
if you put a million sheets of 30 cm long paper end to end, how many kilometer long would the paper be from begining to end?
Penny Nom lui répond.
What really is pi? 2002-09-05
Rachel pose la question :
what really is pi? 3.1444
Penny Nom lui répond.
The 20 kilometer walk 2002-08-20
A student pose la question :
THE 1996 OLYMPIC GOLD METAL WINNER FOR THE 20 KILOMETER WALK WAS JEFERSON. HIS TIME WAS 1HOUR, 20 MIN,AND 7SECONDS. HIS TIME WAS NOT GOOD ENOUGH TO BEAT THE WINNER IN 1988 BY JOSEF. HIS TIME WAS 1 HOUR,19 MIN, 57 SECONDS. WHAT WAS THE WALKING RATE OF EACH PERSON?
Penny Nom lui répond.
The circumference of a 72 2002-08-14
Linda pose la question :
What is the circumference of a 72" diameter circle?
Penny Nom lui répond.
A box that holds 22.4 liters 2002-07-07
Jon pose la question :
How do I find the measurements required to make a box that holds 22.4 liters of something?
Penny Nom lui répond.
Perimeter 2002-06-05
Tava pose la question :
I'm a grade four student from St. Mary school. In class we've been dicussing perimeters. So this is what we did; First we each got a piece of paper in the shape of the geoboards and our teacher told us to find as many different shapes of area of 12 square units. During this time we were given to find perimeters of shapes that had twelve square units one of our classmates discovered the biggest perimeter possible with twelve square units of 26 units. Another classmate discovered the smallest perimeter of fourteen units. Here's a question: Why are all the shapes with fourteen units all the same shape? and why are all the shapes with twenty-six units can be different? After we found the biggest and smallest shapes our teacher told us we each had to find at least one shape of the biggest and smallest. After we each foud a shape with a perimeter of twenty-six and fourteen we had to find different shapes with different perimeters. During that time we discovered different perimeters.

What we found was fourteen all the way up to twenty-six, but they all went by two's. Why didn't they count up by 14, 15, 16, 17, 18 etc? I think it's because the area is an even number. See if you added one "block" or "square" to it you always add three because at least one of the sides is together with another side. Whyare all the perimeters all even numbers?


Penny Nom lui répond.
Ounces and cubic centimeters 2002-05-30
Martin pose la question :
How many ounces are in 600cc of liquid?
Penny Nom lui répond.
Conversion of units 2002-04-29
Matt pose la question :
I am having trouble finding a workable equation for the following problem, particularly the conversion of two systems of measurement.

The question states that there are 27 grams of salt in a kilogram of seawater. And it asks how many tonnes (1 tonne = 1000 kilograms) of salt are there in one cubic kilometer of ocean. It also says that the density of seawater is 1.1 g/cm3.

What is the equation and how do I figure out how many kilograms there are in a cubic kilometre?


Harley Weston lui répond.
My 1978 Chevy has a 350 cubic inch engine 2002-03-11
Sharon pose la question :
If my 1978 Chevy has a 350 cubic inch engine, about what size engine would that be in liter?
Penny Nom lui répond.
Diameter of a pipe 2002-02-16
Landry pose la question :
I am trying to calculate the dia. of a pipe 60 inches long that will hold a gallon of water. What is the formula?
Penny Nom lui répond.
The perimeter of an ellipse 2002-02-14
Harry pose la question :
I am planning to build a coffe table with an ellipse of 24x36 for the top. I wish to decorate the edge and need to know the lenght of the perimeter for lay out purposes. Is there an easy way to approximate this figure with out using intergal calculus?
Penny Nom lui répond.
Number conversions and averages 2002-02-03
A student pose la question :
A table has the measurements of 1.6m by 2m, how much material is needed to cover table? I converted to cm then multiplied but got an answer of 32000cm ,so I divide by 100 to get to metres - the answer was 320 which I know is wrong - please explain!!

Also I need to explain in my own words what an 'average' is and I am struggling.


Penny Nom lui répond.
Miles and kilometers 2002-01-22
Dennis pose la question :
I'm in the middle of purchasng a vehicle and it was built in Canada. Therefore it is in kilometers and not in miles. I forgot how many kilometers are in a mile. It registers as 183,049 kilometers.
Penny Nom and Judi McDonald lui répond.
The distance across a circle 2002-01-18
Douglas pose la question :
If you know how far around a circle is (say earth) 25000 miles how do you calculate the distance across?
Penny Nom lui répond.
Metric units 2001-10-25
Kelly pose la question :
i am helping my kids out with school work and don't remember meters,centimeters decimeters and all those. We have to change meters into cm.....and so on..........is there a place on the web to look for some kind of help in these questions
Penny Nom lui répond.
Combien 1.0 ml fait en metre cube 2001-09-10
M. Mauger pose la question :
Bonjour, je voudrais savoir combien 1.0 ml fait en metre cube.
Claude Tardif lui répond.
The diameter of an oval 2001-05-23
Tim pose la question :
Is there a such thing as a diameter of a oval? If not, is there a way to get the circumference?
Claude Tardif and Penny Nom lui répond.
Geometry 2001-04-21
Rebecca pose la question :
How do you prove the following:
Let CD be an altitude of triangle ABC and assume that angle C=90 degrees. Let r1 and r2 be the inradii of triangle CAD and CBD, respectively, and show that r+r1+r2=CD, where r is the inradius of triangle ABC.

Chris Fisher lui répond.
Perimeter of an acre 2001-03-24
Liz pose la question :
What is the perimeter of one acre of land?
Penny Nom lui répond.
What is my name? 2001-02-23
Julia pose la question :
My perimeter is 12 cm. My sides are all equal. The sum of half my sides is equal to 6 cm. How many sides do I have? What is my name?
Penny Nom lui répond.
Conversions 2001-01-24
Tanya pose la question :
I have 2 questions
  1. covert 628 kilometers to miles.(round off your answer to two decimal places.)

  2. a new clerk in your office is to earn $200 per week. If she works 30.5 hours each week, what is her hourly rate? (round off your answer to the nearest hundreth, that is, to the nearest cent.)

Penny Nom lui répond.
Kai's bike 2000-12-07
Fumiko Muhammad pose la question :
The wheels on Kai's bike are 27 inches in diameter. His little sister, Masako, has a bike with wheels that are 20 inches in diameter.

a. How far will Kai go in one complete turn of his wheels?

b. How far will Masacko go in one complete turn of her wheels?

c. How far will Kai go in 500 turns of his wheels?

d. How far will Masako go in 500 turns of her wheels?


Penny Nom lui répond.
The perimeter of a football field 2000-10-18
Paige pose la question :
The width of a football field is 67ft greater than the length. The perimeter is 480ft What is the width and length?
Penny Nom lui répond.
A chord length 2000-10-17
Al Paas pose la question :
How to determine the length of a chord given the diameter of the circle and the maximum distance from the chord to The circle?
Chris Fisher lui répond.
History of a meter 2000-04-07
Jarod Fischer pose la question :
The length of a meter has been determined in three different ways. The first and original way was determined in 1798. The second way was determined in 1960. The third and current way was determined in 1983. What were the three ways and why were the first two abandoned?
Harley Weston lui répond.
Hexagons 2000-02-23
Mohd. Amjad pose la question :
I want to know about hexagons. What is the area and the perimeter of an hexagon?
Penny Nom lui répond.
Perimeter of an ellipse 2000-02-21
Kurtis Proffit pose la question :
What is the formula for the perimeter or circumference of an ellipse?
Chris Fisher lui répond.
Cubic meters to gallons 1999-12-09
Chris Compton pose la question :
I am trying to convert cubic meters to gallons. Do you have the conversion formula? The problem I am trying to solve is:

59.62 cubic meters to gallons.


Harley Weston lui répond.

The circumference of a circle 1999-10-05
Mara Frost pose la question :
what is the formula to find the circumference of a circle, or if there is no formula, how do you find the circumference of a circle?
Penny Nom lui répond.
Perimeter 1999-08-15
Mel Nordan pose la question :
The length of a rectangle is IS 3 1/2 times its width. Its perimeter is 108cm. Find its length and width. Choices for the width: 12,18,24
Penny Nom lui répond.
A Polar Plot 1999-05-06
Irene pose la question :
Consider the polar equation r=2-3Cos(theta/2) In the interval [o, 4Pi], how would you find the area of one of the leaves and also the length of one of the edges of a leaf?
Harley Weston lui répond.
Circles 1999-04-21
Alex Elkins pose la question :
How do you find the circumference of a circle if you only know the radius and the square feet or inches of the circle if the radius is 18 inches, If done in inches do you multiply by 12 to get the square feet?
Jack Lesage and Harley Weston lui répond.
Ounces and milliliters 1999-04-17
Tony Rizzi pose la question :
I'm mixing a formula of:

48 oz distilled water.
15 grams of Hydroxy Ethyl Cellulose GR (powder)
30 grams of Hydroxy Ethyl Cellulose MR (powder)
200 grams of Barium Sulfate (powder)
1000 grams of Calcium Hydroxide (powder)

After mixing, I need to estimate the amount of each ingredient that fits in a 3ml syringe. And how many syringes I can fill?
Harley weston lui répond.

Converting Metric Measurements 1999-04-08
Rick pose la question :
Do you have any simple explanations for converting Metric measurements to other Metric measurements?? What helpful hints do you also have for a 5th Grader...
Penny Nom lui répond.
Metric Conversion 1999-03-07
TDestra pose la question :
Please help to answer this question: Is a cubic centimeter equivalent to milligrams or milliliters, and how many? Also, is it a liquid measure?
Penny Nom lui répond.
Converting mm's to inches 1999-02-22
Paul White pose la question :
It has been a long time since high school and I do not remember how to convert mm to inches. Could you please tell me what this would convert to in inches? 210 X 254 mm.
Chris Fisher lui répond.
Simplifying Radicals 1999-01-25
Randy pose la question :
Find the perimeter of a rectangle in simplified radical form L=root80 W=root45. I would appreciate a detailed explination of the process for solving.
Jack LeSage and Penny Nom lui répond.
Fitting a Curve 1999-01-19
Kirk pose la question :
Hello my name is Kirk from Scarborough, Ontario.

I have been out of a formal education system for thirty years. I program microcontrollers in my spare time. I have built a temperature sensing device ready to go but, thermistors are very non-linear. I do know that there is a way to calculate the input condition of the thermistor and display the correct temperature in degrees C. I am sending a file to show my progression so far.
Harley Weston lui répond.

Centimetres 1998-11-11
Vicky Caldwell pose la question :
I work in Carpet Manufacturing and I need to know how to figure the calculation for a roll of carpet in centimeters. For example: a 12 x 100 roll of carpet equals 133.34 square yards, which is 100 linear ft. and 1,200 square foot. Can you please tell me how I would figure to get CENTIMETERS???????
Jack LeSage lui répond.
The Left Side of a Parabola. 1998-10-20
Shay pose la question :
Find the parametrized equation for the left half of the parabola with the equation: Y=x^2-4x+3
Chris Fisher lui répond.
Nickles on the Highway 1998-09-22
Ronnie Mac Donald pose la question :
How many nickels would it take to cover 226km of highway,each nickel is 2cm in diameter?
Penny Nom lui répond.
A Hexagon 1998-09-22
Lee Curtis pose la question :
Could someone calculate this for me?
If a hexagon is 38 feet 8 inches across, how wide would each of the six sides be?

Thank you,
Lee Curtis
Chris Fisher and Harley Weston lui répond.

Area Calculation 1998-05-05
Jessica pose la question :
There's a question I have that I hope you can answer about calculating area.

It seems to me that common sense says that if you have say 100 meters of fence, the area you can enclose should be a constant. Yet the math says it is not so. For example if you build a rectangle 10x40 the enclosed area is 400 square meters. But if you build a rectangle 5x45 then the area is 225 square meters, even though you've started with the same amount of fencing.

I know this is true, but can anyone explain IN ENGLISH why this is so?
Harley Weston lui répond.

Area of a Triangle. 1998-03-05
Amanda pose la question :
How do you figure out the area of a triangle? You already have the perimeter and height
Penny Nom lui répond.
Limited area and unlimited perimeter. 1997-11-28
Rosa pose la question :
There is a figure, it has unlimited perimeter but has limited area , what is the figure and how to draw it ?

Thank you very much!
Harley Weston lui répond.

Pi 1997-10-31
Ryan McKinnon pose la question :
What Is Pi?
Chris Fisher lui répond.
The diameter of the sun. 1996-10-29
Lynda Mow pose la question :
What is the process for solving the following question? As viewed from earth, the sun subtends an angle of approx 32'. If the sun is 93,000,000 miles from earth, find the diameter of the sun.
Penny Nom lui répond.
Area=Perimeter 1996-04-02
Jason Pelowski pose la question :
When will the area and the perimeter of a right triangle be numerically equal?
Penny Nom and Maxine Stinka lui répond.
 
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