Find the exact area of the octagon. show your reasoning?

Since there are as many of these triangles as the polygon has sides (eight for an octagon), you have to multiply the area of this triangle by the number of sides. You will obtain the total area of the octagon: area of octagon = 8 * base * height / 2 = perimeter * apothem / 2 .

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The answer is c) 8^20/2^8

This is because both equations are equal to 4.5 x 10^15

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