SOLUTION: What is the area and perimeter of an octagon with a radius of 11? I have tried (1/4)* sqrt3 (s^2) but am not sure.

Question 867568: What is the area and perimeter of an octagon with a radius of 11?
I have tried (1/4)* sqrt3 (s^2) but am not sure.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
What is the area and perimeter of an octagon with a radius of 11?
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It's 8 isoceles triangles with 2 sides = 11 and a central angle of 45 degs
--> 16 right triangles
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=
= 242*sqrt(2) sq units
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