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one way to do it is to first draw a rectangle around the octagon then multiply length by width then subtract the area of the four triangles out side the octagon from your total answer.

OR

You can use the formula A= 2 s2 cot(π/h)

π is supposed to be pi

s2 is supposed to be s squared

Cot is an abbreviation for cotangent

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Juvenal Dare

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Q: What is the formula find the area of an octagon?
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What is the formula to find the area of an octagon?

one way to do it is to first draw a rectangle around the octagon then multiply length by width then subtract the area of the four triangles out side the octagon from your total answer. OR You can use the formula A= 2 s2 cot(π/h) π is supposed to be pi s2 is supposed to be s squared Cot is an abbreviation for cotangent


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