







Finding the area of a regular polygon 
20070504 

From Dana: We are trying to figure the square footage of a tetradecagon....sort of a round house with 14 sides that are 8 ft' in length. It has a height of 9 ft. How do we figure the square footage of this? Answered by Stephen La Rocque. 





The volume of a decagonal prism 
20110529 

From Susan: How do you find the volume of a decagonal prism? Answered by Penny Nom. 





Hexadecagon 
20090920 

From Rick: Is there an easy way to figure the even side lengths of a Hexadecagon in layman's
terms, so I know how long to cut the exterior support boards for my pool deck.
The pool is a 16' diameter Hexadecagon and my Wife wants a 4' wide splash deck
all the way around which would make the outside 24' in diameter. Answered by Chris Fisher and Harley Weston. 





A regular decagon is inscribed in a circle 
20090312 

From Renata: A regular decagon is inscribed in a circle of diameter 36 feet. Approximate the perimeter and area of the decagon. Answered by Robert Dawson. 





Area of a Decagon 
20081115 

From preethi: what is the formulae of decagon? Answered by Janice Cotcher. 





Hexadecagon 
20080709 

From Dave: I would like to know at what length and angle I would cut wood to make a Hexadecagon. Answered by Penny Nom. 





The diagonals of a hendecagon 
20080310 

From karan: How many diagonals does a hendecagon have? Answered by Penny Nom. 





A real life example of a decagon 
20080212 

From Htet: I have a math dictionary to complete by February 13, 2008, Wednesday, and I need to know what a real life example of a decagon can be. I need help on this! Answered by Penny Nom. 





The side of a decagon 
20070629 

From Dale: Mathematically how can you calculate the distance of each side of a decagon?
I know the interior angles each measure 144 degrees.
Given the length of the widest point is 10 feet. Answered by Harley Weston. 





Undecagon 
20070418 

From Kiara: What is the origin of the word undecagon? Answered by Stephen La Rocque. 





A 13 sided figure 
20070412 

From Kiara: I was wondering what you call a 13 sided figure. I'm in
6th grade and my teacher said i could get extra credit if I figure this out. Thanks
a lot for your help.When I get extra credit I will be sure to mention you guys!
Thanks! Answered by Stephen La Rocque. 





The area of a decagon 
20070228 

From heather: how do i find the apothem and area of a decagon that has a perimeter of 60? Answered by Penny Nom. 





10 friends run into each other at a bar 
20060819 

From Ken: 10 friends run into each other at a bar. We will name them A,B,C,D,E,F,G,H,I AND J.
They all leave at the same time heading for seperate bars. However, A runs into B, C runs into D, E runs into F, G runs into H and I runs into J. These five groups leave again and the same thing keeps happening, but each time running in to someone they have not run into before. How many bars will it take, with each person meeting the others only once, until all of them have met each other again? Answered by Chris Fisher. 





The chord length of a polygon 
20060614 

From Krishna: I have to find out the chord length of a polygon  Tetradecagon ! The Radius of the Circle is 11.5 Cms. The Circle is intersepted by 14 arcs. Then how to find out the chord length? Answered by Stephen La Rocque. 





What is the measure of the interior angles of a decagon? 
20060510 

From Malissa: What is the measure of the interior angles of a decagon?
And what is the measure of each interior angle of a regular decagon? Answered by Stephen La Rocque. 





The area of a regular decagon 
20060306 

From Ester: how do i find the area of a regular decagon with sides of length 6 cm and an apothem of 9.2 cm? Answered by Stephen La Rocque. 





What is the sum of the measures of the angles of a decagon? 
20051015 

From Dianna: What is the sum of the measures of the angles of a decagon? Answered by Penny Nom. 





Cubic yards of concrete 
20040929 

From Tanya: We are starting up a new business and for the business we will be required to order concrete for various shapes. Right now we have a job that requires a concrete slab that a decagon it is 1403/4" from flat side to flat side, 74" from point to center and each flat side is 46" The pad should be 4" thick with 12"x12" continuous footing. Answered by Harley Weston. 





The sum of the areas of two regular decagons 
20020527 

From A parent: The sum of the areas of two regular decagons is 39 square inches, and their radii are in the ratio of 2:3. Find the area of the larger decagon. Answered by Paul Betts. 





Undecagon 
20010221 

From Karen: I need to know what kind of a polygon an undecagon is and how many sides it has. This is a problem in my math book. Answered by Penny Nom and Michael Tsatsomeros. 





Hendecagon 
20001009 

From Jillian: 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. Answered by Chris Fisher. 

