SOLUTION: A regular pentagon with sides of length 4 is inscribed in a circle. Find the area of the Pentagon

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Question 974592: A regular pentagon with sides of length 4 is inscribed in a circle. Find the area of the Pentagon
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A regular pentagon with sides of length 4 is inscribed in a circle. Find the area of the Pentagon
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Area+=+ns%5E2%2Acot%28180%2Fn%29%2F4 n = # of sides, s = side length (of all regular polygons)
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Area+=+5%2A16%2Acot%2836%29%2F4+=+20cot%2836%29
Area =~ 27.528 sq units
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I'm not a proponent of memorizing formulas as there are too many of them.
I know this one, tho.
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The circle is not relevant.