SOLUTION: 10ft.wide octagon shape, need to know what lenght and the angle cut to make. thank you

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Question 198438: 10ft.wide octagon shape, need to know what lenght and the angle cut to make. thank you
Answer by arallie(162) About Me  (Show Source):
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10ft.wide octagon shape, need to know what lenght and the angle cut to make. thank you
10ft x 10ft square to start
Angle size is rather simple too.
a=180%28s-2%29 where s=number of sides(10) and a=total angular measurement
a=180%2810-2%29
a=180%288%29
a=1440 divide by the number of angles
1440%2F10=144 each angles measurement
Each side will be
l=h%28sqrt%282%29-1%29 where h=hieght(10) and l=lengthof a side.
l=4.142135623730950488016887242097