







Seven tangent circles 
20180423 

Domenick pose la question : How to calculate the circumscribed and inscribed circles formed by seven .019685 diameter circles arranged in a circle with all seven circles tangent to each other? Penny Nom lui répond. 





A circle inscribed in a quarter circle 
20180416 

abhijeet pose la question : ABC is a quarter circle and a smaller circle is inscribed in it. if AB = 1cm then find the radius of smaller circle Penny Nom lui répond. 





An equilateral triangle inscribed in a circle 
20180315 

Olatundun pose la question : An Equilateral Triangle Of Side 20cm Is Inscribed In A Circle.Calculate The Distance Of A Side Of The Triangle From the Centre Of The Circle. Penny Nom lui répond. 





An equilateral triangle inscribed in a circle 
20170915 

sumit pose la question : what is the area (in sq. unit) of an equilateral triangle inscribed in the circle x^2+y^24x6y23=0. Penny Nom lui répond. 





Quadrilateral ABCD is inscribed in a circle 
20170911 

Joie pose la question : Quadrilateral ABCD is inscribed in a circle such that side DA is the diameter. AB=2m., BC=4m., CD=6m., angle BAD=75.93degrees. Find the area of the quadrilateral. Penny Nom lui répond. 





A polygon inscribed in a circle 
20170527 

Levan pose la question : This was the closest to what I am trying to solve.
http://mathcentral.uregina.ca/QQ/database/QQ.09.06/s/dj1.html
So in the answer linked, we figure out what is "c".
But what if we know "c" and want to find out "n" based on specific "r=1".
It might be simple math, but I have not had any relationship with math for 20 years now
but this question puzzles me for a reason. Penny Nom lui répond. 





A trapezoid inscribed in a circle 
20170517 

Kameron pose la question : I have been given a challenge problem that states that Diameter AB is drawn in a circle if 10 inch. Chords AC and BD are drawn so that each is of length 12inch and ACDB is a trapezoid. Find the height, in inches, of the trapezoid Penny Nom lui répond. 





A circle inscribed in a 30690 triangle 
20170407 

Kameron pose la question : i have been given a problem with a 306090 triangle and a circle inscribed with a radius of 2 and was told to find the perimeter of the triangle Penny Nom lui répond. 





A circle inscribed in an isosceles triangle 
20170114 

Sal pose la question : There is a right isosceles triangle. Inscribed inside of it, is the largest possible circle.
Ho do you find the value of the radius?
I want to find out a way of only using the rules/laws of geometry, or is that not possible. Penny Nom lui répond. 





8^3/2(2+2) 
20170113 

Mary pose la question : 8^3/2(2+2) Penny Nom lui répond. 





20+30*0+1=? 
20161226 

Mr pose la question : 20+30*0+1=? Penny Nom lui répond. 





A circle inscribed in an equilateral triangle 
20161127 

jo pose la question : what is the radius of the inscribed circle of an equilateral triangle with altitude 12 units? Penny Nom lui répond. 





A cone inscribed in a hemisphere 
20160807 

anonymous pose la question : A cone is inscribed in a hemisphere. the slant height of the cone is 20cm. When cut along its slant height, the cone forms a sector of a circle.
find the angle of the sector, to the nearest 1 decimal place. Penny Nom lui répond. 





A puzzle embedded in a table top 
20160513 

Aaron pose la question : I want to make a table with a puzzle embedded in it. The table top would be a
36" circle and the puzzle is 20"x27" I'm thinking that it's not going to fit,
but not sure. Any help would be appreciated.
Thanks,
Aaron Penny Nom lui répond. 





A triangle inscribed in a circle 
20160422 

Olyana pose la question : I am struggling with this question! Help!
So, there is a circle. In the circle, there is an equilateral triangle inscribed.
Each side of the triangle is 20. There is no other info given, other than
the triangle is inscribed in the circle and the sides of the triangle are 20.
I am supposed to find the radius of the circle! Please help! Penny Nom lui répond. 





An isosceles triangle inscribed in a circle 
20160325 

NIHAL pose la question : A isosceles triangle is inscribed in a circle having sides 20cm,20cm,30cm. find the radius of circle Penny Nom lui répond. 





A circle is inscribed in a hexagon 
20151228 

Lalitesh pose la question : A circle is inscribed in a regular hexagon ABCDEF
Prove that AB+CD+EF=BC+DE+FA Penny Nom lui répond. 





Order of operations 
20150912 

Tanisha pose la question : I would just like to double check if something like 5x squared times 4x cubed equals 20x to the power of 5??
It's just that we were told you can only answer an equation like this if the base is the same...so does that mean the x part or the whole thing like 5x?
I'm sorry if that didn't make sense!
Thank you for your help!! Penny Nom lui répond. 





1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 = ? 
20150618 

Sharon pose la question : 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 = ?
I got 1 as my answer despite BODMAS making it 12 because logic tells
me I ought to place brackets around the first set of repeated addition. Could you
please clarify this for me? Thank you 😊 Harley Weston lui répond. 





An equilateral triangle inscribed in a circle 
20150611 

Casey pose la question : I have an equilateral triangle inscribed in a circle  this triangle
has been bisected to give me 2 right triangles. I know the length
of the line bisecting the equilateral triangle is 36 inches. How do
I figure out the circumference of the circle and the length of the
sides of the equilateral triangle? Penny Nom lui répond. 





A pentagon inscribed in a circle 
20150530 

Victoria pose la question : find the area of a regular pentagon inscribed in a circle with radius 3 units Penny Nom lui répond. 





A triangle inscribed in a circle 
20150507 

R2D2 pose la question : A triangle is inscribed in a circle of radius 10. If two angles are 70 degrees and 50 degrees find the length of the side opposite the third angle? Chris Fisher lui répond. 





A circle inscribed in a square 
20150419 

michael pose la question : A circle is drawn in a square PQRS. If the total area of the shaded portion of the square is 42 cm square, calculate the radius of the circle Penny Nom lui répond. 





An 8 pointed star inscribed in a circle 
20150410 

Kermit pose la question : How do you find the area of the star that is formed by two squares and surrounded by a circle. The only given information is that the radius of the circle is 10. Penny Nom lui répond. 





An isosceles triangle inscribed in a circle 
20150323 

Rachel pose la question : Triangle ABC is an isosceles triangle inscribed in circle O. If each leg of the triangle is 13cm and the altitude to the base of triangle ABC is 5cm, find the radius of the circle. Penny Nom lui répond. 





128/(16)/(2) 
20150128 

jackie pose la question : 128/(16)/(2) I was wondering if you can show me how to work this question out Harley Weston lui répond. 





An irregular convex octagon 
20141113 

james pose la question : I have an irregular convex octagon, alternating between 4 large edges, say 'a' mm long and 4 small edges, say 'b' mm long, is there a formula available so that I can work out the minimum size sit a circle with a radius of 34.25mm inside it thank you Chris Fisher lui répond. 





50+913 multiplied by 2= 
20140625 

Adrian pose la question : 50+913 multiplied by 2= Penny Nom lui répond. 





A problem with numbers 
20140514 

Justina pose la question : Okay so I don't understand how to equal this equation to 10 using bedmas.
I've been stuck on it for a few days now. Is there different ways you can show me
Using these same numbers?
5 2 4 3 1 = 10
Help! Thanks. Robert Dawson and Penny Nom lui répond. 





A circle a square and a rectngle 
20140512 

mazhar pose la question : suppose the length and breadth of the rectangle are 5 cm and 10 cm respectively and M is a point along the corner of the circle. what is the radius of the circle?(diagram is given..but i didn't mention it..actually the diagram looks like a circle inscribed in a square and the right bottom corner one rectangle will be given ,it is touches to circle at a point M that I've already mentioned and the dimensions of that rectangle also I've mentioned) please help me out.. Penny Nom lui répond. 





Cutting a hexagon from a disk 
20140405 

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. 





A circle inscribed in a right triangle 
20140316 

akshaya pose la question : A circle with centre O and radius r is inscribed in a right angled triangle ABC. If AB=5 cm, BC=12 cm and < B=90*, then find the value of r. Penny Nom lui répond. 





A cone inscribed in a sphere 
20140228 

joel pose la question : how can I find the radius and the height of a cone INSCRIBED in a sphere, given the sphere having a radius of 6? ( note: the diameter of the cone is equal to its slanted height). Penny Nom lui répond. 





Order of operations 
20140204 

Alex pose la question : Hi there,i got problem with order of operation.Can you please help to find a solution for this?
Thank u beforehand
63(7+2)+(2+4)/34. Penny Nom lui répond. 





A rectangle inscribed in a circle 
20140110 

Marian pose la question : A 16 cm by 12 cm rectangle is inscribed in a circle. Find the radius of the circle. Penny Nom lui répond. 





An equilateral triangle inscribed in a circle 
20140106 

Anonymous pose la question : An equilateral triangle with sides 6 inches is inscribed in a circle. What is the diameter of the circle? Penny Nom lui répond. 





A circle insubscribed in an isosceles trapezoid 
20131208 

Bob pose la question : A circle is insubscribed in an isosceles trapezoid, with
parallel lengths of 8cm and 18cm.
What is the lengths of sloping edges and why? Robert Dawson lui répond. 





A square inscribed in a circle 
20131014 

Jenn pose la question : Hello! I am about to buy a 7'9" round rug, but I want to have it cut down into a square. What's the largest square I can obtain from this? Thank you! Penny Nom lui répond. 





The markup on a country maple bedroom set 
20130926 

steven pose la question : Bargain Furniture sells a fivepiece country maple bedroom set for $1299. The cost of this set is $700. What are the markup on the bedroom set? Penny Nom lui répond. 





A messy arithmetic expression 
20130224 

niiaryee pose la question : (((((5^2*4^3)1/5+9^3/3)+(25+(4*5)/15)^210)/10/2)3))))) Penny Nom lui répond. 





4*4+4*4+44*4=??? 
20130206 

Jacky pose la question : 4*4+4*4+44*4=??? Penny Nom lui répond. 





An equilateral triangle inscribed in a circle 
20130117 

Nicole pose la question : How do you find the shaded region of a circle if an unshaded equilateral triangle in inscribed in it. The only other things I know about the problem are that the side lengths of the equilateral triangle are 14 inches. Penny Nom lui répond. 





3x6)+(12divided by2)8= ? 
20121217 

christina pose la question : hi my question that's been bothering me is what's
(3x6)+(12divided by2)8= ????? Penny Nom lui répond. 





Milling round stock to square stock 
20121217 

Bryan pose la question : Question from Bryan:
I want to know what the smallest diameter round is that will make a 31/4" square? Is there a formula for that? I am milling round stock into square.
Thank you. Harley Weston lui répond. 





A circle inscribed in a triangle 
20121128 

Angie pose la question : Circle O is inscribed in triangle ABC. Angle A = 50 and angle B = 60. Find arc XY in dgrees Penny Nom lui répond. 





A raised bed in the shape of an octagon 
20121122 

pat pose la question : I want to make raisedbed gardens  usually 4' square, but want to be more creative by creating octagonal boxes. The ideal size for square beds is 4'x4'. The boards are 8' long, so I want to get as much out of a board as I can. If I want an octagon with a diameter of 4', I think the sides would be (rounded off) about 1.5' each using 2 full boards with a little waste and the growing space would be less than a 4' square (16 square feet). If I want to increase the length of each side to 2' each (getting the max from a board), what will the diameter of this octagon be so I can determine the growing space of the box. (The reason a 4' square is important in gardening, besides maximizing the wood, is that a person can reach into the center to plant and pick veggies without stepping on the soil, so diameter is important). My math days are long over and I'm having trouble working with octagons! Thank you! Harley Weston lui répond. 





A mathematical expression with the answer 7 
20121110 

emily pose la question : hey um i need to find and problem that fallows bedmas that has one division one multiplication and one sub and one add and one brackets and one exponents that has the answer of number 7 Penny Nom lui répond. 





4+4x5+4= ? 
20121031 

Bob pose la question : 4+4x5+4= ? Harley Weston lui répond. 





Two congruent circles in a rectangle 
20121020 

Alexander pose la question : Have you ever solved a problem, in which you have a rectangle, from which you need to cut the largest two circles of equivalent diameter? I bisected a rectangle diagonally, but the circles, while tangent to two of the sides, are not tangent to eachother. Can you devise a method for two equivalent circles, that are tangent to two sides, are also to eachother?
Take for example a piece of paper, Each if the two largest circles has a diameter that is greater than the distance to the midpoint of the diagonal bisector of the rectangle. Chris Fisher lui répond. 





An equilateral triangle and a regular hexagon in a circle 
20120911 

Heidemarie pose la question : The vertices of an equilateral triangle with side length of 10 sqrt 3 cm lie on a circle. Find the side length of the regular hexagon whose vertices lie on the same circle. Penny Nom lui répond. 





5 + 5 + 5  5 + 5 + 5  5 + 5 x 0 = 
20120729 

Tom pose la question : 5 + 5 + 5  5 + 5 + 5  5 + 5 x 0 = Harley Weston lui répond. 





A regular hexagon inscribed in a circle 
20120725 

jim pose la question : A regular hexagon with an area of 24√3 is inscribed in a circle. What is the area of the circle? Penny Nom lui répond. 





93(2+6)/62*5 
20120608 

Sammi pose la question : Hi there,
I am doing a practice test for my admittance into a college accounting program
and I am really confused by this equation.
The answer I got was way off what the test answer sheet says it should be.
The question is
93(2+6)/62*5
If you could explain how the answer beccomes 35 that would be greatly apprciated!!
Thank you! Robert Dawson lui répond. 





A circle inscribed in a triangle inscribed in a circle 
20120426 

Maty pose la question : How do i find the area of a triangle inscribed a circle while another smaller circle is circumscribed by the same triangle and the radius is 8. Chris Fisher lui répond. 





A circle drawn around a equilateral triangle 
20120401 

BIMAL pose la question : what is the diameter of a circle drawn around a equilateral triangle of size 6 cm Penny Nom lui répond. 





6/2(1+2)=? 
20120221 

boyong pose la question : 6/2(1+2)=? Harley Weston lui répond. 





A circle inscribed in a quarter circle 
20120220 

sonam pose la question : ABC is a quarter circle and a circle is inscribed in it and if AB=1cm than find radius of a small circle. Penny Nom lui répond. 





A circular cylinder circumscribed about a right prism 
20120125 

Noriz pose la question : A cylinder is circumscribed about a right prism of altitude 12.6cm.
Find the volume of the cylinder if the base of the prism is an
isosceles triangle of sides 3cm by 3cm by 2cm.
Hope you can help me with this. Penny Nom lui répond. 





A cube inscribed in a sphere 
20120123 

Gelo pose la question : What are the largest volume and total surface area of a cube that may be inscribed inside a sphere whose radius is 5 kilometers. Walter Whiteley lui répond. 





A circle inscribed in a regular octagon 
20120116 

Eric pose la question : I have a circle inscribed in a regular octagon. How do I determine the length of one side of the octagon if I know the radius of the circle (2.75 inches) ? p lui répond. 





An arithmetic expression 
20120105 

Jennifer pose la question : 1.8 + 3.2 / 0.4  4.375 x 0.2 Penny Nom lui répond. 





An arithmetic expression 
20111128 

Muhmmad pose la question : 2/5*3/71/6*3/2+1/14*2/5 Penny Nom lui répond. 





A trapezoid inscribed in a circle 
20111002 

Greg pose la question : A trapezoid is inscribed within a circle.
The two interior angles who share the longest side are 70 and 80.
The arc whose chord is the longest side has a length of 120.
Find the other two interior angles of the trapezoid, and the other three arc lengths. Chris Fisher lui répond. 





 16 x 6 / 2 
20110909 

Nadiyah pose la question : i dont understand how to answer this question ;
 16 x 6 / 2
i still dont understand it with bedmas
/ = divison
please help! Penny Nom lui répond. 





A regular hexagon inscribed in a circle 
20110718 

Courtney pose la question : If ABCDEF is a regular hexagon inscribed in a circle of
radius r, prove that the length of each side of the hexagon
equals r. Penny Nom lui répond. 





A rectangle is inscribed in a circle 
20110717 

Alexea pose la question : A rectangle is inscribed in a circle of diameter 15in. Express the perimeter as a function of the width x. Penny Nom lui répond. 





A circle inscribed in a triangle 
20110507 

Aishwarya pose la question : The angles of a triangle are 50, 60, and 70 degrees, and a circle is touches the sides at A, B, C. Calculate the angles of the triangle ABC. Penny Nom lui répond. 





PEDMAS 
20110410 

Ross pose la question : 48 ÷ 2 (9+3)
Is the answer 2 or 288? Harley Weston lui répond. 





A circle is inscribed inside an isosceles trapezoid 
20110225 

priyam pose la question : a circle is inscribed inside an isosceles trapezoid (with parallel sides
of length 18 cm and 32 cm) touching all its four sides.
find the diameter of the circle.
thanks for help!! Penny Nom lui répond. 





I am confused by BEDMAS 
20101201 

Steve pose la question : I am confused by BEDMAS in this question
100 / 2 x 3 + 1=
I believe it to be 151
Am I correct? Harley Weston lui répond. 





394+6 divided by 3 to the power of 2 = 3 
20101102 

Emma pose la question : Help me and my family cannot figure this out, it the last question on my paper. I need to know how to use place the brackets to make the following problem true.
394+6 divided by 3 to the power of 2 = 3
we have tried for three days and cannot get it.......help! Robert Dawson and Claude Tardif lui répond. 





Limiting Cases in Geometry 
20100922 

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 square inscribed in a circle 
20100525 

Middle pose la question : what is the perimeter of a square inscribed in a circle of radius 5.0 inches? Penny Nom lui répond. 





(x+1)(x+2)(x+3)/(x+1)(x+2) 
20100519 

Nazrul pose la question : Simplify : (x+1)(x+2)(x+3)/(x+1)(x+2)
Which answer is correct:
(i) x+3
(ii) (x+2)^2(x+3)
Please help me. Harley Weston lui répond. 





An isosceles trapezoid is inscribed in a circle 
20100406 

Abby pose la question : An isosceles trapezoid whose bases have lengths 12 and 16 is inscribed in a circle of radius 10. The center of the circle lies in the interior of the trapezoid. Find the area of the trapezoid Penny Nom lui répond. 





A regular hexagon and an equilateral triangle in a circle 
20100405 

Beth pose la question : A regular hexagon and an equilateral triangle are both inscribed in the same circle so that the hexagon and the triangle share three vertices. The radius of the circle is 10cm. What is the difference between the area of the hexagon and the area of the triangle? Chris Fisher lui répond. 





A rectangle inscribed in a circle 
20100324 

sadiq pose la question : here is the question,
in my mathematics book there is equation of the area of the rectangle
inscribed in a circle having equation x^2+y^2=a^2
and the area of rectangle is 4xy=4x(a^2b^2)^1/2
i don't know what is b but a is surely the radius
(i want the derivation for the area of rectangle). Harley Weston lui répond. 





A related rates problem 
20100303 

Amanda pose la question : A circle is inscribed in a square. The circumference of the circle is increasing at a rate of 6 inches per second. As the circle expands, the square expands to maintain the tangency. Determine the rate at which the area of the region between the circle and square is changing at the moment when the cricle has an area of 25(pi) square inches. Penny Nom lui répond. 





Order of operations 
20100207 

addie pose la question : (3+10) x 10  8 x 4 = Penny Nom lui répond. 





A regular pentagon 
20091214 

Jamie pose la question : A regular pentagon is inscribed in a circle of radius 4.5 cm.
Determine its perimeter and area to one decimal place!
Thank YOU ! :) Penny Nom lui répond. 





An equilateral triangle is inscribed in a circle 
20091206 

anna pose la question : An equilateral triangle is inscribed in a circle of radius 6. Find x and the length of
one side of the equilateral triangle. The picture is a triangle where the corners touch the
sides of a circle and there is a line drawn down the middle of the triangle. A point labeled
D which is in the triangle but im pretty sure that its marking the radius of the circle.
From that point D is a line going from that point to the bottom left corner of the triangle.
So this line shall make another mini triangle. The bottom of the big triangle is then split
into 2 segments and the left segment is labeled x. Please help for I am stuck! Penny Nom lui répond. 





4 squared and (4) squared 
20090929 

Andrea pose la question : Is 4 squared the same as (4) squared? I am thinking the first is 16 and the second is +16. I am trying to clarify for my students. Penny Nom lui répond. 





Order of operations 
20090924 

aman pose la question : my question is regarding the fact
i have a formula which looks like this :
(ratio 1 + ratio 2 divided by 2)
so my question is do i add first then divide by 2 or do it all together Penny Nom lui répond. 





5 x 8 + 6 divided 6  12 x 2 
20090924 

Susan pose la question : 5 x 8 + 6 divided 6  12 x 2. I am not sure of the rules of operation for this type of question Penny Nom lui répond. 





A pentagon inscribed in a circle 
20090729 

Faisal pose la question : O is the center of the circle. Sides AB and AE are equal. Angle B = 95,
angle C = 130, angle D = 138. Find angles A and E.
Diagram is attached.
Best,
Faisal Chris Fisher lui répond. 





WHAT IS 8+4(227) 
20090505 

ROB pose la question : WHAT IS 8+4(227)= Penny Nom lui répond. 





A maxmin problem 
20090420 

Charlene pose la question : A fixed circle lies in the plane. A triangle is drawn
inside the circle with all three vertices on the circle and two of the vertices at the
ends of a diameter. Where should the third vertex lie to maximize the perimeter
of the triangle? Penny Nom lui répond. 





The volume of water in a cone 
20090317 

Freddie pose la question : A ball of diameter 20cm rests in a conical container whose angle with the slant height and the vertical axis is 25degrees. if water is poured into the container just enough to touch the bottom of the ball, find the quantity of water in the container. Penny Nom lui répond. 





A regular decagon is inscribed in a circle 
20090312 

Renata pose la question : A regular decagon is inscribed in a circle of diameter 36 feet. Approximate the perimeter and area of the decagon. Robert Dawson lui répond. 





A sphere in a cone 
20090210 

Shubham pose la question : An upturned conical vessel of radius 6cm and height 8cm is completely
filled with water. A sphere is lowered in the conical vessel filled with
water and the size of sphere is such that it just touches the sides of
cone and is just immersed. What fraction of water overflows? Harley Weston lui répond. 





A regular hexagon is inscribed in a circle. 
20090126 

Thejas pose la question : A regular hexagon is inscribed in a circle. If the perimeter of the hexagon is 42 inches, how many inches are in the circumference of the circle?
How do you express this in the terms of pi? Robert Dawson and Penny Nom lui répond. 





Three circles inscribed in a circle 
20081218 

seema pose la question : three equal circles each of radius 1 cm are circumscribed by a larger circle.find the perimeter
of circumscribing circle? Robert Dawson lui répond. 





A triangle inscribed in a circle 
20081117 

Wanda pose la question : I have the same question that you guys answered 20070302. I need more clarification. I UNDERSTAND how to get the radius=3, I get that it is an equilateral triangle so each vertex is 60 degrees, I get that area of triangle is 1/2 bh.
I DO NOT understand why we multiply area X 3 , or how to calculate the values of base and height. Please explain a little further. Thanks.
Wanda Penny Nom lui répond. 





BEDMAS 
20081019 

Jenna pose la question : ok my question is
How do u do BEDMAS in the correct order when it's set up in a weird order without getting confused
I.E
(184)exponent2 divided by 2 Penny Nom lui répond. 





bedmas 
20080908 

Jack pose la question : i was stuck on a question 3(62)+3^2 Stephen La Rocque lui répond. 





BEDMAS 
20080903 

John pose la question : I'm usually good at math but once i got to high school everything went blank for me. i am
especially stuck on this one question 6+4[22 / 23x2]. please help! thanks Penny Nom lui répond. 





Bedmas 
20080825 

Robert pose la question : I am having some difficulty with the following equation:
200 * 5 / 2  450 + 25 Victoria West lui répond. 





BEDMAS 
20080812 

Rebecca pose la question : I have 3 questions.
1) I don't really understand BEDMAS.Im going in to the 6th grade and im
kind of nervis about it.?
2)When you're doing BEDMAS what does the small 3 or 2 above the
other numerals mean?
3)How would you answer this:5+2 x 9  9 x 12= ?? Janice Cotcher lui répond. 





Inscribed Rectangle 
20080730 

Felicia pose la question : A rectangle whose base is twice its altitude is inscribed in a circle whose radius is 5 mm.
Find the area of the rectangle. Penny Nom lui répond. 





A square is inscribed within a square 
20080719 

Shirley pose la question : A square is inscribed within a square that has a side the measures 16
centimeters. The vertices of the smaller square are located at the midpoints
of the sides of the larger square. What is the area of the larger square, area of
a smaller square, the probability that a point chosen at random is in the
shaded are? Express the answer as a simplified fraction. Penny Nom lui répond. 





A cube inscribed in a right cone 
20080716 

Steven pose la question : A cube is inscribe in a right cone of radius 2 and height 5. What is the volume of the cone? Victoria West and Harley Weston lui répond. 





An isosceles triangle inscribed in a circle 
20080715 

Anne pose la question : Here is the math problem quoted from book:
"An isosceles triangle is inscribed in a circle of radius R,
where R is a constant. Express the area within the circle but outside
the triangle as a function of h, where h denotes the height of the triangle." Penny Nom lui répond. 





Two triangles and a circle 
20080703 

Anita pose la question : An equilateral triangle with side of length 1 cm is inscribed in a circle. A second equilateral triangle is circumscribed about the circle with all sides tangent to the circle. Find the length of a side of the second triangle. Harley Weston lui répond. 





A circle inscribed in a square acre 
20080619 

Scott pose la question : Q'm trying to find out the sq footage of the corners of an acre. If an acre is 43,560 sq and if I have this right the surface area of the circumference is 1040 ft. what is the combined square footage of the 4 corners? Or the percentage the original acre? Harley Weston lui répond. 





How many bricks I can place around a 26inch circle? 
20080522 

Jon pose la question : I want to know how many bricks I can place around a 26inch circle? There must be a formula other than trial and error. The length of the bricks is 6inches. [How many 6inch tangents can be in a 26inch circle?
Thank you very much.
Jon Harley Weston lui répond. 





A triangle inscribed in a semicircle 
20080519 

Larissa pose la question : Find the area of the shaded region outside of a triangle inscribed (meaning the all three points of the triangle are on the circle ) in a half circle of diameter 10 inches, if one side of the triangle is the diameter and the other side is 8 inches long. (A triangle that is inscribed in a triangle is a right triangle by definition.) Penny Nom lui répond. 





BEDMAS 
20080504 

Bernie pose la question : Can you please solve one mathematical equation for me which is as follows. 3 squared  (5 + 16 divided by 4 times 2) Penny Nom lui répond. 





A rectangle inscribed in a circle 
20080427 

sridhar pose la question : A rectangle with perimeter 28 cm inscribed in a circle of radius 5 cm
find the area ? Penny Nom lui répond. 





Why does 2^2 = 4 when 2 * 2 = 4? 
20080422 

blaine pose la question : Why does 2^2 = 4 when 2 * 2 = 4? Penny Nom lui répond. 





2 ^ 2 + (6  9) / (3) + 4 * (2) 
20080401 

Jeth pose la question : How do I simplify: 2 ^ 2 + (6  9) / (3) + 4 * (2) Penny Nom lui répond. 





Angles subtended by the same arc 
20080323 

Reid pose la question : Prove that two inscribed angles subtended by the same arc are equal. Stephen La Rocque lui répond. 





A pentagon inscribed in a circle 
20080319 

Elaine pose la question : My question as written on my homework is: Given a pentagon inscribed in a circle of radius r, determine a) the angle between any two sides of the pentagaon b) the perimeter of the pentagaon c) the area of the pentagon. I know this kind of counts as three questions, so if you can only answer one, that's okay. Any help will be much appreciated. Thanks! Stephen La Rocque lui répond. 





Any regular polygon inscribed in a circle 
20080317 

lindsay pose la question : how do find the perimeter of a regular octagon inscribed in a circle with a radius of 5 units Stephen La Rocque lui répond. 





An arithmetic expression 
20080305 

Kasani pose la question : evaluate the expression: 2^1[14  4(6)]  (7  3) Penny Nom lui répond. 





Inscribed square in a triangle 
20080127 

Adrian pose la question : Consider a rightangled triangle PQR, where QR is the base and PQ is the height.
QR=4cm and PQ=3cm. A square is inscribed in this triangle.Determine the length
of one side of the square. Stephen La Rocque lui répond. 





Finding the area of an isosceles triangle given one angle and the inradius 
20080124 

Saurabh pose la question : Given an isosceles Triangle, whose one angle is 120 and inradius is √3. So area of triangle is? Stephen La Rocque lui répond. 





The cube of a number 
20080112 

Sadie pose la question : can you help me to find out how to cube a number
example (6 cubed / by4) =54 what is cube or how do you cube something Penny Nom lui répond. 





Smallest cone containing a 4cm radius inscribed sphere 
20071219 

Eva pose la question : A sphere with a radius of 4cm is inscribed into a cone. Find the minimum volume of the cone. Stephen La Rocque lui répond. 





A circle inscribed in a triangle 
20071206 

Linnea pose la question : I have a tringle with a circle inscribed in it. My teacher wants me to find the radius of the circle. This is what she gave me to work with. The triangle is ABC, AB = AC = 6, and BC = 4. She also told us to use A(squared) + B(squared) = C(squared). and that there are altitudes and and incenter. I have no idea how to do this. Harley Weston lui répond. 





The area of an octagon inscribed in a circle 
20071201 

Harry pose la question : I need to find the area of an octagon in a circle. each point of the octagon touches the edge of the circle, and the circle's diameter = 4 cm. What is the area of the octagon Penny Nom lui répond. 





(322 x 5) divided by 2 + 8 
20071128 

Kim pose la question : Solve
(322 x 5) divided by 2 + 8 Leeanne Boehm lui répond. 





A circle is inscribed in a square 
20071028 

Carolyn pose la question : A circle is inscribed in a square. What percentage of the are of the square is inside the circle. Victoria West lui répond. 





Hexagon inscribed in a circle 
20071026 

VIVEK pose la question : what are the properties of a regular hexagon inscribed in a circle.
If the radius of the circle is given then how to find the side of the regular hexagon Stephen La Rocque lui répond. 





BEDMAS 
20071023 

brit pose la question : (5+4)7*4/28+8 Melanie Tyrer lui répond. 





Order of operations 
20071017 

Devon pose la question : What function precedes the other? ie; 18  4 x2 = Penny Nom lui répond. 





Simplifying algebraic expressions 
20071009 

Sakeena pose la question : (2^2*3)^x+1/2^2x*3x Stephen La Rocque lui répond. 





Solving arithmetic problems in the right order (BEDMAS) 
20071005 

Kim pose la question : 3+4x2(10 divided by 5)= what? Penny Nom lui répond. 





Size of a sphere fitting inside a cone 
20070927 

Juan pose la question : I am supposed to find the largest sphere that
will fit into a cone. I am assuming is a maximizing problem, but I am not sure
of what relation (between a cone and a sphere) to use. Penny Nom and Stephen La Rocque lui répond. 





Filling a planting bed 
20070918 

Luke pose la question : How many 40lbs bags will it take to fill area 21feet long 45inchs wide 9 inch deep? Penny Nom lui répond. 





A cube in a sphere 
20070911 

Justin pose la question : What percent of the volume of a cube is occupied by the largest possible sphere centered in that cube? Stephen la Rocque lui répond. 





A rectangle inscribed in a circle 
20070911 

Sobeida pose la question : A rectangle that is x feet wide is inscribed in a circle of radius 8 feet. What is the area of the rectangle as a function of x.
Thanks! Stephen la Rocque lui répond. 





Find the area of a regular pentagon inscribed in a circle 
20070803 

Tracy pose la question : Can you please help me with finding the area of a regular pentagon inscribed in a circle using the Pythagorean theorem. The radius of the circle is 5 cm and each side AB = BC = CD = DE = EA = 6 cm. Stephen La Rocque, Leeanne Boehm and Chris Fisher lui répond. 





Area of a star in a regular pentagon with side length 10cm 
20070724 

Chetna pose la question : A regular pentagon with side 10 cm has a star drawn within (the vertices match).
What is the area of the star? Stephen La Rocque lui répond. 





Any regular polygon inscribed in a circle 
20070712 

DJ pose la question : Circle with r=12" is inscribed in a regular octagon. What is the length of each octagon segment?
Note: Our answer works for any regular polygon inscribed in any circle. Stephen La Rocque lui répond. 





Finding the radius of an inscribed circle 
20070705 

Maria pose la question : I need to find the radius of a circle which is inscribed inside an obtuse triangle ABC. I know all the angles and all the lengths of the triangle. Stephen La Rocque and Chris Fisher lui répond. 





Using BEDMAS 
20070516 

Dishant pose la question : I know BEDMAS but im very cofused with this question. The question is 32(5x2)x2+7. Can you please help me? Penny Nom lui répond. 





Area of circles within a circle 
20070408 

Avaline pose la question : Imagine that there are four small circles inscribed in a bigger circle. The 4 small circles are shaded. What is the ratio of the area of the shaded region to the area of the unshaded region? Stephen La Rocque lui répond. 





Radius of a circle in a square 
20070405 

Lori pose la question : A circle is inscribed in a square. What is the radius of the circle?
If there is a small rectangle with a 2 ft. top and a 1ft side at the left in the
square touching the corner of the circle. Stephen La Rocque and Penny Nom lui répond. 





The area of an inscribed triangle 
20070302 

Caitlin pose la question : What is the area of an equalateral triangle inscribed in a circle whose circumference is 6 pie?? PLEASE HELP Penny Nom lui répond. 





A pentagon inscribed in a circle 
20070222 

Amanda pose la question : Find the formula for calculating the length of the side of a pentagon given the radius of the circle that encloses it. Once you find the formula, find the length of the side of a pentagon which is enclosed in a circle 12 cm in diameter. So I need to know the formula, and the length of the side of the pentagon. Thank you!! Penny Nom lui répond. 





Perimeter of an octagon inside a circle 
20070208 

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. 





BEDMAS solving for X 
20070207 

damian pose la question : Hi, I am having a problem understanding why when using BEDMAS the text book example of the following question has used bedmas and reduced the calculation to 4/3.
Text book formula: X/200,000 = (X  90,000) / 150,000 X = 4/3 * (X  90,000) X = 360,000
My solution: I always thought that when you do something to one side you do the same to the other. Why would the equation bring the 200,000 / 150,000 down to 4 / 3 I would think it would look something like this. X/200,000 = (X  90,000) / 150,000 X = 200,000*((X  90,000) / 150,000) Stephen La Rocque lui répond. 





A triangle inscribed in a semicircle 
20070206 

Benneth pose la question : Consider a triangle inscribed in a semicircle with a radius of R. What are th possible perimeters for the triagle? And the areas? Penny Nom lui répond. 





A rectangle inscribed in a circle 
20070204 

Benneth pose la question : Consider a rectangle with radius R inscribed in a circle. What are the possible areas of the rectangle? Steve La Rocque and Walter Whiteley lui répond. 





A circle inscribed in an octagon 
20070125 

Anna pose la question : If I know that the sides of my octagon are 8 units, how do I determine the radius of an inscribed circle? Penny Nom lui répond. 





Is 2^2 = 4 or 4? 
20070123 

Joan pose la question : Is 2 squared, when written without parentheses around the 2, 4 or could this correctly be solved by squaring 2 (2 x 2) for an answer of 4? Or, to correctly get an answer of 4, would the problem have to read (2) squared? Stephen La Rocque lui répond. 





BEDMAS 
20070123 

Joanne pose la question : getting 2 different answers for 24divided by 4(57) getting 12 or 3 can you please explain the thinking behind each? Steve La Rocque, Haley Ess and Penny Nom lui répond. 





An octagon inscribed in a square 
20061229 

Richard pose la question : An octagon is inscribed in a square so that the vertices of the octagon trisect the sides of the square. The perimeter of the square is 108 centimeters. What is the number of square centimeters in the area of the octagon? Walter Whiteley lui répond. 





A regular polygon inscribed in a circle 
20061219 

Katy pose la question : If a regular hexagon is inscribed in a circle of radius 6.72 centimeters, find the length of one side of the pentagon. How would I got about explaining this? Penny Nom lui répond. 





BEDMAS? 
20061129 

john pose la question : I won a contest and they have a confusing format for the STQ. here it is: 11 (+) 44 (x) 2 () 10 (%) 25 I've never seen brackets around the operands and wondering how to treat it. I fear they want me to answer the question left to right as the answer is 4 if I use BEDMAS I get 98.6 (which clearly sounds wrong for what they want) any thoughts? Stephen La Rocque lui répond. 





Creating a triangle in a circle 
20061128 

Dirk pose la question : My daughter has a school project where she must draw a circle and then draw an equilateral triangle inside the circle. She said you have to identify six points on the circle to correctly draw the triangle. How do you accomplish this? Penny Nom lui répond. 





36+4X3= 
20061025 

Tom pose la question : 36+4X3= Penny Nom lui répond. 





(2/3)^2/(4/2)/1/3 
20061025 

Jena pose la question : how do i simplify this problem? (2/3)^2/(4/2)/1/3 Stephen La Rocque lui répond. 





(2324/4)525+214 
20061015 

Sherin pose la question : (2324/4)525+214 Penny Nom lui répond. 





The area of regular pentagon inscribed in a circle 
20061012 

Admire pose la question : i need help on how to find area of regular pentagon inscribed in a circle of radius 8cm Stephen La Rocque and Penny Nom lui répond. 





Four fours 
20061008 

Prabh pose la question : Find out 10 BEDMAS problems using order of operation with only four 4's in the problem. The solution must be the digits 110.
Example 44/44=1 Stephen La Rocque lui répond. 





BEDMAS 
20060924 

Partick pose la question : if you have a question like this (4)(4)+(4)+4 how do you solve it step by step Penny Nom lui répond. 





What is the diameter of the circle that contains this octagon? 
20060921 

Dave pose la question : if the distance between two parallel sides of an octagon is 350 cm, what is the diameter of the circle that contains this octagon (ie. a circle that touches all eight corners)? Stephen La Rocque lui répond. 





what is 8+(2)(5)/4(1)4(2+3) 
20060908 

Jordan pose la question : what is 8+(2)(5)/4(1)4(2+3) Paul Betts lui répond. 





A cube inscribed in a sphere 
20060803 

Glenn pose la question : Given the diameter of the sphere 10cm. find the largest cube inscribe in the sphere. Stephen La Rocque lui répond. 





Order of Operations 
20060629 

Marcy pose la question : I have been having problems with this skill testing question. I know the rules of operation but I don't understand why they would put it in brackets. Can you help me. I have two answers but I would like to know which one is right. Im having a disagreement with a friend over this matter. Thank you so much
[ (20 + 82  6) ÷ 16 ] x 14 Steve La Rocque and Paul Betts lui répond. 





An octagon shape flower bed 
20060624 

Brandy pose la question : hello my name is brandy my husband and I would like to build an octagon shape flower bed to put around the tree in the front yard
we would hope to have the whole shape about 4 ft5 ft around the tree. what would be the way to find out how to cut each side to that they fit together equally Penny Nom lui répond. 





A square in a circle 
20060405 

Lisa pose la question : A square is inscribed in a circle. Determine the percent of the circle's area that is outside the square. Stephen La Rocque lui répond. 





BEDMAS 
20060321 

Andie pose la question : It's been a long time since I've used bedmas. I'm still confused as to what the answer to this question would be.
30  (2 x 9) + (15/3)= Penny Nom lui répond. 





Building a flower bed 
20060317 

Bobby pose la question : I am building a flower bed 60 ft long by 8 ft wide by 3 ft deep. How much dirt will it take to fill it with top soil/dirt. Penny Nom lui répond. 





BEDMAS 
20060131 

Janielle pose la question : What Do All the Letters In BEDMAS Stand for? Penny lui répond. 





A regular octagon is inscribed in a circle 
20051213 

Carlin pose la question : A regular octagon is inscribed in a circle of radius 15.8 cm. What is the perimeter of the octagon? Penny Nom lui répond. 





BEDMAS 
20051124 

Judy pose la question : My name is Judy and I am a grade 6 teacher.
We have just started our lessons on the order of operations and my students have asked me why we have BEDMAS and what is the logic to it.
Is there a reason that that we do math in this particular order?
Who invented this rule or how was it decided on and when? Walter Whiteley lui répond. 





A cube in a sphere 
20051019 

Damian pose la question : A sphere passes through the eight corners of a cube side 10cm. Find the volume of the sphere. Penny Nom lui répond. 





BEDMAS 
20050901 

A student pose la question : I am a student and am wondering about the answer to this question.
56/2(31)
is the answer 7?
Harley Weston lui répond. 





A regular hexagon is inscribed in a circle. 
20041208 

Abraham pose la question : A regular hexagon is inscribed in a circle. What is the ratio of the length of a side of the hexagon to the minor arc that it intercepts?
(1) pi/6
(2) 3/6
(3) 3/pi (This is the correct answer.)
(4) 6/pi
I found the length of the minor arc to be (pi)(r)/3 by doing a sixth of the circumference(2pi r).But I can't find the length of the radius to finish off the problem. If I knew the radius I would then plug it into the above and then use the radius again to be the length of the side because the triangle(one of the six of a hexagon) is equilateral. But can you show me how to get the radius to be 3? Thank you so much.
Walter Whiteley lui répond. 





Order of operations 
20041110 

Andrew pose la question : I'm trying to solve this question, and I can't seem to remember the rules back from my high school days.
(40 x 8 ) / 2 + 55  15 =
Can you help me with the answer? Harley Weston lui répond. 





Bedmas 
20041109 

Fariha pose la question : i have a single line question and am not sure of the method
it would be appreciated if u could send me a method and a solution Q : 1 + 9 / 2 + 5 * 1000
would this be solved by BEDMAS? if not, why? Penny Nom lui répond. 





Bedmas 
20041030 

Gina pose la question : I am just curious whether Bedmas would be used in the following question as it is not in the typical Bedmas format.
Multiply 12 x 24
Add 26
Divide by 2
Subtract 7
Would we go about doing it in the sequence it is given or in Bedmas ? Penny Nom lui répond. 





Largest square inside a circle 
20041025 

Bob pose la question : my granddaughter asked
what is the largest size square in inches
would fit in a 60 inch circle?
I believe it to be around 42.3 inches but
would like to teach her how to do it mathematically. Penny Nom lui répond. 





Order of operations 
20040904 

Leanne pose la question : 6 + 3  2 x 3 = Claude Tardif lui répond. 





50/5x  y 
20040822 

Rick pose la question : Niece has a question that was marked wrong but we are unable to determine how the teacher calculated and arrived at the answer? The problem was as follows:
50 / 5x  y =
x=5
y=1 Harley Weston and Leeanne Boehm lui répond. 





A cube is inscribed inside a sphere 
20040818 

A student pose la question : A cube is inscribed inside a sphere with radius sqrt8cm. Find the
(a) length of the cube
(b) volume of the space inside the sphere but outside the cube. Penny Nom lui répond. 





(3x50)+20/5=? 
20040403 

A student pose la question : what is the answer to:
(3x50)+20/5=? Penny Nom lui répond. 





BEDMAS 
20040320 

Brad pose la question : I am in grade 7. My teacher tells me brackets always first, well i know that but, 5 (4) x 2
Does the (4) count as a bracket or is it just telling you not to minus 4 from 5 but to multiply 5 x 4 ? Am i correct? Penny Nom lui répond. 





Order of operations 
20040128 

John pose la question :
I am trying to find out any information concerning the development of the order of operations. for example, when (why/how) did it become the case that 2 + 3 x 5 =17, rather than 25.
any insight is appreciated. Thank you.
Penny Nom lui répond. 





BEDMAS 
20040121 

Jessica and her mom pose la question :
my mom and I were wondering 2 things.
1. what is the reason for having bedmas.
2. 5+54+[6x3(6+13x2) 5+9]
Penny Nom lui répond. 





An octagon shaped bed frame 
20031123 

Trish pose la question : My son and I are making an octagon shaped bed frame. We are going nuts trying to figure out what angle to cut the boards to make an outline of an octagon. It seems that the 8 inside angles of the 8 "corners" are 120*, but what is the angle that the 2x6 wood should be cut so that they will angle together to form the outline of the octagon? Penny Nom lui répond. 





A circle around an irregular polygon 
20031103 

Dale pose la question : How do I find the properties of a circle that is drawn around an irregular polygon of (n) sides with the lenghts of each side given and all end points of the polygon lye on the circumferance of the circle? Chris Fisher lui répond. 





A rectangle in a circle 
20030927 

Abdu pose la question : A rectangle ABCD is inscribed in a circle. If the length of AB is 5 and length of BC is 12, what is the area of circle outside the rectanlge ABCD? Penny Nom lui répond. 





Order of operations 
20030907 

Brian pose la question :
It has to do with the 4 rules of operations, Parentheses first before operations outside/evaluate all exponential expressions/all multiplication and divisions/then all additions and subtractions. Who made these rules and when did they make them,,, I know its somewhat of an unorthadox question but I must know. I would really appreciate it. Penny Nom lui répond. 





A sphere inscribed in a cone 
20030810 

A student pose la question : A sphere with radius 5cm is inscribed in a right circular cone 20 cm in height.find
(a) the base radius ,volume of the cone (b)volume of the shaded space( to 3 sig fig) Penny Nom lui répond. 





43(m+1)=(38) 
20030625 

Jamie pose la question :
I have a problem, like most of your mailers, I do remember BEDMAS but maybe I'm missing the finer points! It's been a while, he goes 43(m+1)=(38) Penny Nom lui répond. 





BEDMAS 
20030531 

Kristie pose la question : (3x50)+20/5=?
I know bedmas but i forget how to do it. Penny Nom lui répond. 





Order of operations 
20030216 

A student pose la question : How is the order of operation used in everyday life other than in a math class or at school? Also .... Can you give me a list of all the mathematician that are still living that uses the order of operation? Claude Tardif lui répond. 





Order of operations 
20030215 

Debbie pose la question : Question: 20(9+4)x7=? Possible answer 71 or 49? Penny Nom lui répond. 





BEDMAS 
20030209 

Stefanie pose la question : I do remember the rules of BEDMAS, but for some reason this question puzzles me. 6 X 9  3 + 44 I started with the Multiplication 54  3 + 44 But then I got stuck, do I proceed with adding the 44 and subtracting the 3 or figure out what 3 + 44 is, but then how would that work with 54?
Penny Nom lui répond. 





5x(2)32/8 
20030113 

A student pose la question : I'm having problems solving this question: 5x(2)32/8 Penny Nom lui répond. 





3810+12divided by4multiplied by 16 
20020830 

Brenda pose la question : my math question is as follows: 3810+12divided by4multiplied by 16=? Penny Nom lui répond. 





Order of operations 
20020718 

Danna pose la question : I would like to know how to solve this type of problem; I already have the answer. Problem: 2 [5 (4 + 6)  2] = 96 Also, what do you call this type of problem? Thanks a lot. Penny Nom lui répond. 





A polygon inscribed within an ellipse  Part 2 
20020708 

Steven pose la question : I recently sought your advice about a problem that I have been working on for eight years or so concerning a polygon inscribed within an ellipse. I think that I may have confused matters by the way in which I put the question and hope that the enclosed diagram will clear matters up. In the ellipse below I have drawn three chords inscribed within one quadrant ( this would pertain to a twelve sided figure within the whole ellipse). These chords are exactly the same length as each other, for example if the major axis of the ellipse was 360 and the minor axis 240 I have worked out that a twelve sided figure would have sides of 78.2487. However I worked this out empirically with a method that could only be described as gruelling I would be most grateful if you could tell me of a method that would work for any ellipse and any number of sides. Chris Fisher lui répond. 





An equalateral polygon inscribed within an ellipse 
20020630 

Steven pose la question : How would you calculate the length of one of the sides of an equalateral polygon (of n sides) inscribed within an ellipse ( of any eccentricity ) where all of the vertices exactly touch the perimeter of the ellipse? I know that when the eccentricity is zero ( i.e a circle ) the formula: r * (sin(180/n) * 2) will suffice. But what about when the eccentricity is greater than zero? Chris Fisher lui répond. 





8/13*26/27 
20020501 

Arias pose la question : 8/13*26/27= Penny Nom lui répond. 





A triangle in a circle of radius 6 
20020326 

Marko pose la question : In a circle of radius 6, a triangle PQR is drawn having QR = 8 and PQ = 10. Determine the length of PR Chris Fisher lui répond. 





The isosceles triangle of smallest area 
20020308 

Lettie pose la question : can you find the isosceles triangle of smallest area that circumscribes a circle of radius of one? Walter Whiteley lui répond. 





Two circles inscribed in a rectangle 
20020227 

Amina pose la question : Given a rectangle with dimensions L=6, H=5. Two circles are inscribed such that they touch each other(circles are adjacent to each other) and also their circumferences touch 2 sides of the rectangle. One of the circles has radius=4. Find the radius of the other circle. Penny Nom lui répond. 





An octagon inscribed in a circle 
20020110 

Kent pose la question : A circle of 30 in. diameter has an octagon (8 equal chords) inscribed in it. What is the length of each chord? Chris Fisher lui répond. 





Exponents 
20010114 

A student pose la question : I am wondering if a number raised to the second power is "squared" and a number raised to the third power is "cubed" is there a name for any number raised to any other power. Harley Weston lui répond. 





BEDMAS 
20000922 

Monica Zimmer pose la question : In the Math rule BEDMAS does it matter if you do the division or the multiplication first? Penny Nom lui répond. 





Order of operations 
19991025 

Garrett pose la question : 99*(57+76)*91085/9 Penny Nom lui répond. 





A tetrahedron inscribed in a cube 
19981118 

Jane pose la question : In analyzing a cube, I would like to find a tetrahedron inscribed in the cube which has none of its faces in the planes of the faces of the cube. I would like to see this tetrahedron outlined in the cube. My name is Jane and my email address is BARSOIAN. I am an elementary education student. Walter Whiteley lui répond. 





Two Inscribed Trapezoids 
19980127 

James pose la question : A hexagon inscribed in a circle has three consecutive sides each of length 3 and three consecutive sides each of length 5. The chord of the circle that divides the hexagon into two trapezoids, one with three sides each of length 3 and the other with three sides each of length 5, has length equal to m/n, where m and n are relatively prime positive integers. Find m+n. Haragauri Gupta lui répond. 

