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Nata [24]
3 years ago
12

Find the area of a regular polygon with 7 sides that has a side length of 6 inches and an apothem of 8 inches

Mathematics
1 answer:
alukav5142 [94]3 years ago
3 0

We can always split a regular polygon with n sides into n triangles, whose base is the side of the polygon and whose height is the apothem of the polygon. So, the sum of the areas of all these triangles is

A=n\times \dfrac{s\cdot a}{2}

where n is the number of sides, s is the side length, and a is the apothem length.

So, you just need to plug you values in: in your case, you have n=7,\ s=6,\ a=8

So, the formula becomes

A=7\times \dfrac{6\cdot 8}{2} = 7 \times 6\cdot 4 = 168

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