SOLUTION: How long is each side of an octagon that is 16 ft. across?

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Question 620504: How long is each side of an octagon that is 16 ft. across?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How long is each side of an octagon that is 16 ft. across?
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If it's 16 ft across the flats:
The central angles are 360/8 = 45 degs
The apothem = 16/2 = 8 ft
tan(45/2) = (s/2)/8
s = 2*8*tan(22.5)
s =~ 6.627 feet