119 articles trouvés pour ce sujet.
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The sides of a 5-pointed star inscribed in a circle |
2021-09-18 |
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Scott pose la question : Is there a calculation for the length of each side of a five-pointed star?
I am not worried about area but if I have a circle with a 7.5 foot radius and
place a star inside it, how can I measure the lines creating the star? Harley Weston lui répond. |
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The side length of a hexagon |
2020-02-05 |
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Rob pose la question : I have a hexagon that is 8 feet wide how long would the sides be? Penny Nom lui répond. |
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What do you call a 43-sided polygon? |
2020-01-06 |
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Alniko pose la question : What do you call a 43-sided polygon and what is its interior angle's total measure? Penny Nom lui répond. |
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A hexagonal planter |
2019-11-19 |
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Colleen pose la question : I need to build a hexagon planter around a 32” square box. How long is each side of the hexagon? Penny Nom lui répond. |
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How many cubes are in a 3x3x3 cube? |
2019-06-24 |
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Darren pose la question : Dear Sir/Madam,
How many cubes of different sizes (eg. 1x1x1, 2x2x2, 3x3x3) are there in total in say,
a 3x3x3 cube? I have trouble figuring this out.
Yours faithfully,
Darren Penny Nom lui répond. |
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(3d) Whether line segment intersects triangle |
2019-04-13 |
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rj pose la question : Well hello,
Lets say I have a triangle,
Not any ordinary triangle, but a triangle that is represented in 3 dimensions. I also have a line segment.
Lets say that this triangle has points A(0,0,0), B(1,0,0), C(0,1,1)
And the line segment has points D(0,1/2,0), E(1,1/2,1)
In what way can I find if the line segment and triangle intersect? Their intersection point?
I don't prefer matrices, because they don't make any sense, but ... if that's the only way to solve this, then do what's necessary.
Thank you in advance. Penny Nom lui répond. |
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A triangle made from 12 matchsticks |
2019-01-20 |
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Palesa pose la question : How many different types of triangles can be made with a perimeter of 12 matches? Penny Nom lui répond. |
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7 spheres on a hexagonal tray |
2019-01-14 |
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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. |
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The area of a trapezoid |
2018-09-24 |
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An other pose la question : AB-272 feet: AC 690 feet; CD-330 Feet; DA-669Feet Calculate the area in feet and Acres. Penny Nom lui répond. |
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The sides of a circle |
2018-04-10 |
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Reid pose la question : Hello,
I recently was wondering about whether or not a circle has an infinite number of sides, and I ended up searching it on your website. I saw that you guys found the question to be too ambiguous or something of that nature, and I thought about your process of reasoning involving vertices and such. I soon realized that I may have come up with the solution to the question, but I want to confirm it with you guys. Allow me to explain:
A circle, unlike any other typical 2 dimensional polygon, can sustain an infinite number of straight lines coming in contact with only one point on it. A square, for example, cannot. A square only has 4 locations that can sustain a such a line, each of those being its corners. The flat edge of a square cannot support a tangential line, because the line would either be crossing the edge of the square or coming into contact with multiple points along its edge.
This concept is consistent in every 2 dimensional polygon: pentagons sustain 5 locations for tangential lines, hexagons 6, nonagons 9, etc.
The reason a circle has an infinite number of sides is simply the fact that it must have an infinite number of "corners", assuming it can be defined as a polygon like any of the shapes I described above.
Corners can only exist assuming there is two sides coming into contact with one another.
If there is an infinite number of corners in the circle, which is apparent due to the above reasoning, there must be an infinite number of sides coming into contact with each other.
Thus, a circle is a polygon that consists of an infinite number of sides coming into contact with each other.
Please review this reasoning and let me know if it is solid.
Thank you! Penny Nom lui répond. |
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A side of a square |
2018-04-06 |
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Angie pose la question : I am dyslexic and have problems with spelling and math I'm trying to figure 4.610 Acres Square trying to figure out how many feet or yards of one side if that makes sense to you thank you I'd really appreciate the help Penny Nom lui répond. |
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Related rates |
2018-02-11 |
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angelo pose la question : hi admin please help me answer this question. thank you!
At a certain instant of time, the angle A of a triangle ABC is 60 degrees and increasing at the rate of 5degrees per second, the side AB is 10cm and increasing at the rate of 1cm per second, and side AC is 16cm and decreasing at the rate of 1/2 cm per second. Find the rate of change of side AB? Penny Nom lui répond. |
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A 4 sided lot |
2017-08-15 |
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Micheal pose la question : If one side of .4 acre is 25 feet what would the other three sides be Penny Nom lui répond. |
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More on calculating the area (acreage) of a four-sided lot |
2017-03-06 |
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Kerri pose la question :
Can you please show the formula used to calculate areas as provided on this page:
Calculating the area (acreage) of a four-sided lot Penny Nom lui répond. |
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A square inside a circle inside a square |
2016-11-13 |
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Jeff pose la question : Greetings,
I came across a question from a textbook from years ago. I've been trying to solve it, but am not sure if my approach is correct.
There are 2 squares (1 inner, 1 outer) & 1 circle.
The inner square is the largest square that will fit inside the circle. It has an area of 1 unit.
The circle is the biggest that will fit in the outer square.
What is the area of the outer square? Penny Nom lui répond. |
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The radius of a coffee cup |
2016-09-12 |
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Brett pose la question : What is inside radius, in centimeters of a coffee cup if it holds 350g of coffee when filled to a depth of 9.5 cm? Assume coffee has the same density of water, 1.00g/cm3. A numeric value is expected and not an expression. Penny Nom lui répond. |
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The number of sides of a polygon |
2016-07-23 |
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Shriya pose la question : All the angles of a polygon are either 155° or 140°.
There are twice as many angles of 155 °or 140°.
Find the number of sides of the polygon Penny Nom lui répond. |
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The lateral side length of a cone |
2016-06-05 |
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Diane pose la question : Question is find the lateral side length of a right cone with area of 372 sq. cm and base circle radius of 9 cm. Penny Nom lui répond. |
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The area of a 4-sided lot |
2016-05-25 |
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prasad pose la question : How to find area of a land whose sides are 41ft,33ft,32.3ft and 33.2 ft. Pl give me the formula and proof. Penny Nom lui répond. |
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At what time will Sara catch up with Jake? |
2016-05-07 |
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Laura pose la question : At 11:00 a.m., Jake started driving along a highway at constant speed of 50 miles per hour. A quarter of an hour later, Sara started driving along the same highway in the same direction as Jake at the constant speed of 65 miles per hour. At what time will Sara catch up with Jake? Penny Nom lui répond. |
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The sides of a triangle |
2016-03-15 |
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Hitarth pose la question : Why we cannot construct a triangle ofngiven sides 5cm,5cm and 10cm? Penny Nom lui répond. |
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The midpoints of the sides of a quadrilateral |
2016-02-05 |
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Andrea pose la question : The segments, joining, in order the midpoints of consecutive sides of a quadrilateral form a parallelogram. Penny Nom lui répond. |
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The perimeter of a one quarter acre square |
2016-01-15 |
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Kerry pose la question : If you have a perfect square that is one quarter of an acre what are the length of the sides and how do you arrive at the solution? thank you, Kerry. Penny Nom lui répond. |
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An octagonal frame around a pool |
2015-05-17 |
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James pose la question : I have a 20' pool and need to put a frame around it using 2by 4 what r the lengths and angle cuts Penny Nom lui répond. |
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The side length of a gazebo |
2015-03-14 |
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Dennie pose la question : From middle of side to middle of opposite is 14'6". What is the length of the side? Penny Nom lui répond. |
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Building an 8 sided box |
2014-10-14 |
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Michael pose la question : I want to build an 8 sided box. The North, East, South, and West sides I want them to be 4 feet in length.
The NE, SE, SW, and NW sides I want to be 2 feet in length. What angles do I need to cut my angles.
Thanks Michael Penny Nom lui répond. |
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An octagon around a tree |
2014-07-16 |
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floyd pose la question : I want to build an octagon 4 feet from base of tree from 4x4's. What length do I cut my pieces Penny Nom lui répond. |
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A 5 sided lot |
2014-07-10 |
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mia pose la question : have the feet numbers of three sides, but the forth side is in a "V" so it has two figures.
Question: can i add the two figures of the "v" together to get one figure, so then I would have the figures for all four sides. Harley Weston lui répond. |
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The area of a 5 sided lot |
2014-03-15 |
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Michael pose la question : Question from michael:
This lot is in feet. 59x154x109x188x137 per the plot plan Harley Weston lui répond. |
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A balance puzzle |
2013-01-14 |
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Emily pose la question : I'm stuck on this problem and feel that it can't work! The problem is: there is a door with a balance scale on it. In order to open the door, you have to use the 5 weights to balance the scale. On the left side you have 2 boxes to place the weights and on the right side you have 3. You're 5 weights are as follows: 1lbs, 2lbs, 3lbs, 4lbs, 5lbs. How do you place the weights so that the scale is balanced? Penny Nom lui répond. |
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The side lengths of a triangle |
2013-01-07 |
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Katie pose la question : How do I find the side lengths of a triangle knowing the base and its height?
Thank you, Penny Nom lui répond. |
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A sand box with 14 sides |
2012-07-10 |
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Tom pose la question : Want to build a sand box for a pool that is fourteen foot round wanted to make it in fourteen pieces of wood what angle would each piece be and how long would each piece be Harley Weston lui répond. |
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An octagonal sandbox around a pool |
2012-06-12 |
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Linda pose la question : My pool is 15 feet across and it is round.
How do I measure to cut wood to build a sandbox around it? was thinking it will look like an octagon.
Thanks Harley Weston lui répond. |
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Third side of a irregular triangle. |
2012-04-27 |
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Darya. pose la question : How to find third side of irregular triangle if c = 17m, b = 28m and area S = 210m^2. Penny Nom lui répond. |
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Forming a triangle from 3 line segments |
2012-03-15 |
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rustom pose la question : A point X is selected at random from a line segment AB with midpoint 0. Find the probability that the line segments AX, XB, and A0 can form a triangle. Penny Nom lui répond. |
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Three sides of a triangle |
2011-12-24 |
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saba pose la question : the three sides of a triangular lot have lengths 10,11and 13cm,respectively.
find the measure of its largest angle and the area of the lot? Penny Nom lui répond. |
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The sides of a regular octagon of area 800 sq. ft. |
2011-09-21 |
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Susan pose la question : Help please. I am building an octagon tree house to live in. I would
like the total square footage to equal 800 to 1,000 sq ft. How long
should each side of the octagon be.
tx, susan Penny Nom lui répond. |
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A trapezoid |
2011-08-02 |
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Nazrul pose la question : How can I draw a trapezoid whose parallel sides and other two sides are given. Chris Fisher lui répond. |
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Vertices and sides of a polygon |
2011-03-04 |
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RINA pose la question : My questions is : would a vertices and sides of a polygon be the same number. For example, a octagon it has 8 points and 8 sides. Am i correct? Robert Dawson lui répond. |
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Triangles with perimeter 16 cm |
2011-02-22 |
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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. |
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The sides of an equilateral triangle |
2011-01-27 |
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Cristal pose la question : Hello :) How can i find the sides of an equilateral triangle when only given the height 10m? Penny Nom lui répond. |
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The third side of a triangle |
2010-12-28 |
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andrea pose la question : in triangle abc, a-b=5 and the area is 50cm2.If angle c- 90degrees, find the length
of c. Penny Nom lui répond. |
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Sides and diagonals of a polygon |
2010-11-25 |
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nicky pose la question : The sum of sides of two polygons is 12 and the sum of their diagonals is 19. What kind of polygon are they? Penny Nom lui répond. |
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Determine if a point is inside a cube |
2010-11-24 |
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Ali pose la question : hi every one
i have a problem with cube
they told me to write a program that determine if a point is
inside a cube
so i need the equation of the cube to do the comparison.
in sphere it is easy
sqrt((x-xp)+(y-yp)+(z-zp))<=radios
if u please could help me Robert Dawson lui répond. |
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A 20" octagon |
2010-11-19 |
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CHARLES pose la question : I have a 20" octagon and it has 8 parts. In inches how big is each
part. I was told each part was 5.86".The top of the octagon breaks
into 3 equal parts don't equal 20".When i did my math i thought it should be 6 5/8" which is closer
to 20"
I am trying to cut a octagon out of a 20"circle Stephen La Rocque lui répond. |
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The sides of a trapezoid |
2010-11-03 |
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Bobbi pose la question : Isosceles Trapezoid base=60”; two 45⁰angles at base, two 135⁰ angles at the top, vertical distance between base & top=16”. What is the length of the top line and the two equal side lines? Penny Nom lui répond. |
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The area of a 4 sided region |
2010-07-14 |
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Cliff pose la question : If I wanted to know the square footage of an area that has four different sides and only had the length of one side and the angles at the ends of that length; could the other lengths be found if I wanted to have a total of 130,680 square feet? Robert Dawson and Tyler Wood lui répond. |
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A 14 side well house cover |
2010-03-12 |
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Kenneth pose la question : I am 35 yr I am wanting to build a well house cover. I'm trying to figure out how long the pieces need to be and what angle they need to be for a 4 ft dia with 14 side well house. I would love an answer but would also like to know how to figure it in the future. Thanks Kd Harley Weston lui répond. |
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The side length of a square |
2010-03-08 |
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tara pose la question : am trying to help my brother's daughter in maths, tomorrow she has maths exam
1. Area of sq. picture is 441 sq.cm what is the length of its side. Penny Nom lui répond. |
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The sides of a triangle |
2009-07-08 |
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Susan pose la question : The second side of a triangle is 5ft more than the length of the first side. The third side of the triangle is 10ft less than the length of the first side.
The perimeter of the triangle is 61ft. Find the lengths of each side of the triangle.
Thank you so much! Penny Nom lui répond. |
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A four-sided lot |
2009-04-12 |
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Robert pose la question : back of property is 137' across,with an angle of 122deg.on the left side and an angle of 140 deg. on the right side,the left side is 123' and the right side is 93' long,the left front is 130 deg. and the right front side is 150 deg. and the front of the property measures 78' Harley Weston lui répond. |
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The sides of a parallelogram |
2009-03-17 |
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Sami pose la question : If ABCD is a parallelogram, prove that line AB is congruent to line CD. Clearly state your reasons and conjectures. Penny Nom lui répond. |
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Related rates |
2009-03-14 |
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Jeevitha pose la question : The side of an equilateral triangle decreases at the rate of 2 cm/s.
At what rate is the area decreasing when the area is 100cm^2? Stephen La Rocque lui répond. |
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The sides of a triangle |
2009-03-07 |
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felicia pose la question : ona map, tannersville, chadwick, and barkersvile for a triangle. Chadwick is
70 miles from Tannersville and Barkersville is 90 miles from Tannersville. Which is a
possible distance between Chadwick and Barkersville?
a. 5miles
b. 10 miles
c. 150miles
d. 200 miles Harley Weston lui répond. |
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A shape with 10 sides |
2009-03-03 |
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Sandra pose la question : One of my son's math questions is as follows:
Suppose I have a shape with 10 sides. I choose a vertex then draw lines to the other vertices that dont share sides with the first vertex. How many vertices will that be and why? Penny Nom lui répond. |
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The area of a 5-sided lot |
2009-03-02 |
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Linda pose la question : I have a problem I'm hoping you can provide some help with. When I check the property information for our home on our District of North Vancouver website, it shows that our property is supposed to be 1146.99 Square Metres. Yet another property which has identical measurements is listed as having 1173.7 Square Metres. I would like to figure out who is correct. Harley Weston lui répond. |
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The sides of a polygonal building |
2009-02-13 |
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mark pose la question : length of sides of an 18 ft.diameter bldg
i need to find out if i should build an octagon or decagon to keep the
sides of the bldg at 8ft or less. how do i figure the length of the sides
of each? Penny Nom lui répond. |
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Fuel in a tank |
2009-01-16 |
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Steve pose la question : I am not a math expert and want help seeing how much fuel is in a tank at one given time the tank that i have is 27 inches round. It is 69 inches long. laying length ways. it holds 140 gallons of fuel at fill up. I do know that it would hold less at the bottom of the tank an more in the center. Is there anybody that could just give me the figures by the inch without a formula. thanks for your time Stephen La Rocque lui répond. |
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A barrel on its side |
2008-11-13 |
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Dave pose la question : Question from Dave:
How many gallons are left in a 36x60 in. barrel (laying on its side) and has 16 in. of gasoline left. I have attached a diagram. Harley Weston lui répond. |
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The sides of an octagon |
2008-10-12 |
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side lengthsGarry pose la question : I need the length of the sides and the degrees of the angles for a 30 inch diameter
octagon Janice Cotcher lui répond. |
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Does an oval have sides? |
2008-10-02 |
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reid pose la question : My 6 yo neice came home with her math homework and she was supposed to identify which objects had sides.One of the objects was an oval.I don't believe it has sides because it is curved and I don't think that would make it an object with sides.What would be the correct answer?Thanks,Reid Janice Cotcher lui répond. |
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The sides of an octagon |
2008-09-21 |
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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. |
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A silo with a flat side |
2008-07-14 |
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Amy pose la question : Without using the Pythagorean Theorem, determine the capacity of a silo in cubic feet of grain if: the cylinder-shaped silo has one flat, rectangular face that rests against the side of the barn; the height of the silo is 30 feet and the face resting against the barn is 10 feet wide; the barn is approximately 5 feet from the center of the silo. Harley Weston lui répond. |
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A six sided lot |
2008-06-25 |
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Zack pose la question : Please help me find the area of my lot. I am sending a fax of the drawing and dimensions.
Zack Harley Weston lui répond. |
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A 4 sided lot |
2008-06-03 |
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Pat pose la question : If a lot of property is: front 127.87, back 156.17, one side
is
129.73, the other side is 125.00, then how much total acreage is
this. Harley Weston lui répond. |
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The area of a regular pentagon |
2008-06-02 |
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Jenna pose la question : I would like to know if there is a formula to find the area of a regular Pentagon that is not inscribed in a circle only apothem and side length are given. Penny Nom lui répond. |
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The fourth side of a property |
2008-05-14 |
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Penny pose la question : Property has 3 measurements and 2 angles and I want the altitude at a particular point. Corners are sw, nw, ne and se. 1 want the 4th saide measurement confirmed (we think 146.07') and the altitude measurement at 25' from sw (on the sw-se side)
The angles provided are interior at nw 67.38 degrees and the opposing corner se interior appears to be 68.58 degrees. the 3 sides with measurements are: sw to nw=54.07'. sw to se 146.07' and se to ne 53.57'. If you would help, we would really appreciate it. Thanks! Penny Harley Weston lui répond. |
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The sides of an octagon |
2008-05-07 |
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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. |
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The three sides of a triangle |
2008-04-16 |
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Bridgett pose la question : The sum of the lengths of any 2 sides of a triangle must be greater than the third side. If the triangle has one side that is 11 CM, and the second side of the triangle is 4 cm less than twice the third side, what lengths do the 2nd and 3rd side have to be?
between 0000-00-00 and 9999-99-99 Stephen La Rocque lui répond. |
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Some 4 sided polygons |
2008-04-11 |
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kathy pose la question : I am a 4th grade student and need to complete this question:
I need to draw 2 polygons with 4 sides and 2 right angles. Please help. Thanks Penny Nom lui répond. |
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Side lengths and angles in a regular octagon |
2008-04-09 |
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Lori pose la question : I am a builder and need to find the length of the sides of an octagon. I know the length between
the parallel sides (26 feet). What is the length of each side? What is the angle measurement? Harley Weston lui répond. |
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The length of a side of a square |
2008-03-12 |
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laura pose la question : if i had a square of 2.3 square meters what would its radius be?(in centimeters please) Penny Nom lui répond. |
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Side lengths and area of a triangle |
2008-03-08 |
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angela pose la question : In the diagram of ABC the angle A is 65 the angle B is 70 and the side opposite vertex B is 7. Find the length of the side opposite vertex A and find the area of ABC Penny Nom lui répond. |
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A three sided shape |
2008-02-09 |
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Tim pose la question : Question from Tim:
How would I calculate the area in square feet of a "triangle" with sides:
Base is 36 feet; height is 70 feet; and the thirs side is an arch (curve) of 77 feet. Harley Weston lui répond. |
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Third side of a triangle |
2007-12-05 |
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Sudhir pose la question : How can we find the all positive integral values for the third side of a triangle, whose other two sides measure 15 and 20 respectively. (No other information viz. the type of triangle, area, perimeter or angles etc. is given.) Stephen La Rocque lui répond. |
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Sides and vertices |
2007-11-17 |
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derek pose la question : What is the correct name for a 2D geometric shape that would look like one slice from a round pizza and how may sides and vertices would it have? I believe you would say it has one vertex and two sides with the curved boundary not resulting in vertices or a side. Your help is much appreciated. Chris Fisher and Walter Whitelty lui répond. |
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The third side of a triange |
2007-11-12 |
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Christine pose la question : I need the inequality to describe the third side of a triange if two sides are known. First side is 23 and second side is 15. What is the third side? Stephen La Rocque and Victoria West lui répond. |
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Area and side length of a hexagonal tent |
2007-10-09 |
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Mark pose la question : Trying to buy a tent with 6 sides, in the catalog they give me sq. ft., what is the distance from side to side of a hexagonal tent with an area of 90 sq. ft. Stephen La Rocque lui répond. |
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Nine dots |
2007-09-25 |
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al pose la question : Connect the dots.
There is nine dots, three across and three down.
Connect the nine dot with the pencil only using four line and never lifting the pencil off of the paper. Stephen La Rocque and Harley Weston lui répond. |
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george, thomas, abe, alexander... |
2007-09-01 |
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lori pose la question : george, thomas, abe, alexander...
come up with the next few
im confused and need help!! Stephen la Rocque and Harley Weston lui répond. |
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Proof that any side of a triangle is less than half the perimeter. |
2007-07-07 |
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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. |
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Making a box with a particular volume |
2007-06-20 |
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Kimberly pose la question : How do you convert 487 cf into box? Stephen La Rocque lui répond. |
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Area of a hexagon (three ways to find it) |
2007-05-24 |
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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. |
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A square |
2007-03-02 |
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Jake pose la question : how many sides does a square have? Sara Ulmer lui répond. |
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The length of the side of a hexagon |
2007-02-19 |
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Nick pose la question : if the area of a regular hexagon is 259.807 how do i find the length of each side, and the apothem? thanks if you can help Penny Nom lui répond. |
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The altitude of regular n-side pyramid |
2007-01-26 |
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Wendimu pose la question : The altitude of regular n-side pyramid is half of it's base side.What is the angle between the lateral face and it's base? Penny Nom lui répond. |
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What is the point of intersection of two sides of a polygon? |
2007-01-23 |
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Tyler pose la question : What is the point of intersection of two sides of a polygon? Stephen La Rocque lui répond. |
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Octagonal Stop Sign |
2006-10-23 |
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Phil pose la question : My colleagues and I are in a discussion about how many true "sides" an octagonal stop sign has. I say that it has 10 true sides because of the front back sides of a stop sign (3D octagon). Is this correct terminology or should the front and back "sides" be referred to as faces -- equaling 2? Paul Betts, Steve La Rocque and Harley Weston lui répond. |
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The length of 2 sides of a triangle |
2006-09-15 |
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Lonnie pose la question : I need to know how to figure the length of 2 sides of a triangle, as the following example:
The length of the bottom is 12' and the angles are 45, 45 I need to know how long the other 2 sides must be to get an angle of 90 at the top. Stephen La Rocque lui répond. |
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An octagon shape flower bed |
2006-06-24 |
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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 ft-5 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. |
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A side segment of an octagon |
2006-06-24 |
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Ed pose la question : I would like to know how to find a side segment of an octagon when I know that my octagon is 9 feet from side to side and top to bottom? Stephen La Rocque lui répond. |
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What should the length of the other sides? |
2006-06-20 |
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Kevin pose la question : if a property is basically square for 5 acres and one side is 340 feet what should the length of the other sides? Stephen La Rocque lui répond. |
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The sides of a hexagon |
2006-05-24 |
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Emilio pose la question : I need to find the measure of the sides of the hexagon that the area is 58 square units. Stephen La Rocque lui répond. |
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The perimeter of a regular octagon |
2006-04-20 |
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Martin pose la question : I would like to make an octagon out of 2x4 lumber. I know that the lumber needs to be cut at 67.5 degree angles, but how do I determine the length of each piece if I want to make, say, a 2.5 ft diameter octagon? Stephen La Rocque lui répond. |
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Four 25-sided dice |
2005-11-24 |
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dan pose la question : Simply put, I am curious to find the likelyhood of each possibility (4-100) if I were to roll 4 25-sided die. It seems to start off simply, as 1, 4, 10, 20...following the inside diagonal of Pascal's triangle. But as soon as i reach the point where the sum is greater than the number of sides, Pascal's no longer seems to work. I would be greatly appreciated if I could be informed of the proper formula to find this answer, or perhaps if my theory of doing it is wrong. Andrei Volodin and Shaun Fallat lui répond. |
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The sides of an octagon |
2005-11-02 |
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Royce pose la question : I understand there is a simple calculation to determine the sides of an octagon when you know the distance across the parallel flats. something like .447 . can you help? Penny Nom lui répond. |
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The length of the side of an octagon |
2005-09-22 |
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Billy pose la question : How can you find the length of the side of an octagon when all that you know are the long sides of one of the eight perfect isc. triangles inside the octagon that share the same center point? Penny Nom lui répond. |
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The sides of a hexagon |
2004-11-01 |
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Timothy pose la question : I have a perfect Hexagon in which i know the measurement across is 10m. Not from point to point, but from the middle of one side directly across to the middle of the other. From that measurement, how can I determine the length of 1 side. Penny Nom lui répond. |
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A travelling salesman |
2004-09-09 |
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Liz pose la question : A salesman traveled due west from city A to city B. The distance he traveled, that is the ditance from A to B, was X miles. He returned from B to A and found that he had traveled half the distance, X/2 miles. How can that be? Chris Fisher and Penny Nom lui répond. |
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The third side of a triangle |
2004-07-28 |
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Annette pose la question : How do you find the length of a triangle side if you know two sides? Penny Nom lui répond. |
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A pyramid |
2004-05-11 |
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Quiana pose la question : I am a student and I have the following questions I need to answer for homework:
How many sides, vertices, and edges does a pyramid have? Penny Nom lui répond. |
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A fifteen sided polygon |
2004-03-05 |
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Joann pose la question : WHAT IS THE NAME OF A FIFTEEN SIDED SHAPE? Penny Nom lui répond. |
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The sides of a circle |
2004-01-07 |
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Helena pose la question : My name is Helena and I am 10 years old. On a resent math exam I was asked
the question" How many sides does a circle have?" and I wrote down none. The
teacher said the answer was one side. Chris Fisher lui répond. |
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The side length of a regular octagon |
2003-08-09 |
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Rich pose la question : If I know the distance between the parallel lines of an octagon and want to find the length of the sides, can I just divide that distance by 2.414 to reveal the length of the sides? I work construction and just curious if I am figuring it right. Penny Nom lui répond. |
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Some shapes |
2003-04-29 |
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Suzanne pose la question :
- What shape has 12 edges all the same length?
- What shape has 3 surfaces and 1 is curved?
Penny Nom lui répond. |
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A rectangular prism |
2003-01-09 |
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Julie pose la question : How many faces on a rectangular prism and how many bases? Can the base also be a face and can a face also be a base? Diane Hanson lui répond. |
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Nixon, Jefferson, and Madison |
2002-10-08 |
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Lisa pose la question : The longest-lived US presidents are John Adams(age90), Herbert Hoover (also90), and Harry Truman (88). Behind them are James Madison, Thomas Jefferson, and Richard Nixon. The lattter three men lived a total of 249 years, and their ages at the time of death form consecutive odd integers. For how long did Nixon, Jefferson, and Madison live? Penny Nom lui répond. |
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An octagon-shaped deck |
2002-02-20 |
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An instructor pose la question : How can you solve for finding the side measurements of an octagon-shaped deck that is 10 feet long and 10 feet wide. Penny Nom lui répond. |
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The slopes of the sides of the Great Pyramid |
2002-02-09 |
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Christina pose la question : The Great Pyramid is the largest of the Egyptian pryamids. When it was built, it was 481 feet tall and had a square base with 755-foot sides. The pyramid has two different slopes-one along its sides and the other along its edges. Which slope is steeper? Penny Nom lui répond. |
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Third side of Acute Triangle |
2001-11-09 |
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Don pose la question : I gave this problem to my children, 9th and 12th grade and they are not(me too!) sure of the answer. I am trying to determine the length of the third side of an acute triangle. I know two of the lengths but I do not know the angles. Is there a proper formula to use to find the length of the third side? Thank you. Chris Fisher and Penny Nom lui répond. |
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A polygon with five sides |
2001-10-03 |
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A student pose la question : I was asked a question in 5th grade today that goes: i am a polygon with five sides and 2 right angles what do i look like and what is my name Penny Nom lui répond. |
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How many sides does a circle have? |
2001-05-16 |
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Georganne pose la question : How many sides does a circle have? My son answered "infinate" on a test and was corrected. The school insists the answer is 0. Chris Fisher and Denis Hanson lui répond. |
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The sides of an octagon |
2001-04-13 |
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Craig pose la question : How do I figure the length of the sides of an octagon when all I know is the diameter (4.375). Penny Nom lui répond. |
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Hendecagon |
2000-10-09 |
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Jillian pose la question : I need an example of a object that is in the shape of a hendecagon. I know what the shape is but I cannot come up with a real life example of an object that is this shape. Chris Fisher lui répond. |
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Side length of an octagon |
2000-04-22 |
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Unknown pose la question : If I have an octagon that is 12 feet across (side to opposite side) how can I find the length of the sides? Harley Weston lui répond. |
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The side length ratios of some triangles |
2000-04-04 |
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Alexis Lockwood pose la question : I am doing a project for my Math 30B class regarding the side length ratios of 45-45-90 degree and 30-60-90 degree triangles. I would really appreciate any assistance in answering the following questions, or even direction to an appropriate web site or resource on the matter. Harley Weston lui répond. |
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A rhombicosidecahedron |
1999-04-30 |
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Himmat pose la question : What is a rhombicosidecahedron? Harley Weston lui répond. |
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A Hexagon |
1998-09-22 |
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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. |
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A Presidential Proof |
1997-03-18 |
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Greg Smith pose la question : Which US president developed a proof for the Pythagorean Theorem? Where can a copy of the proof be located? Chris Fisher and Harley Weston lui répond. |
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