2006-07-13 05:27:05 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You mean a solid with 7 faces, right? I don't know of any specific formula. I would say to constuct one and see how much water will fill it. (By the way there is no regular 7-sided figure-see Platonic solids)
http://mathworld.wolfram.com/PlatonicSolid.html
http://en.wikipedia.org/wiki/Platonic_solid
2006-07-13 05:32:29 · answer #1 · answered by raz 5 · 0⤊ 0⤋
A heptagon doesn't have a volume as it is 2d. Inc ase you want the area:
A = (0.25nS^2)(tan180/n)
where n stands for the number of sides and and S for the length of a side of the pentagon.
By the way the above expression is a general formula to find the area of any regular polygon. So, we must assume all sides are equal and n=7
therefore, the area of a pentagon as a function of S
A = 0.843S^2
2006-07-13 12:40:34 · answer #2 · answered by haroun i 2 · 0⤊ 0⤋
A heptagon is a seven sided plane figure and has an area but not a volume.
Assume the length of each side is l
The area is 7/2 * (l/2)^2 * cosec(pi/7)
2006-07-13 12:35:05 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 0⤋
Zero!!! Unless you specify the 3rd dimension - I am assuming heptagon to be a two-d figure.
2006-07-13 12:29:43 · answer #4 · answered by SmartSpider 4 · 0⤊ 0⤋
assuming like heptagedron or seven sided die specific dimension1 side 180 *4 + dimension 2 180*3 add dinension1 with dimension2
?know what a dodahexagedron is?
2006-07-13 12:41:13 · answer #5 · answered by Book of Changes 3 · 0⤊ 0⤋