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Find the area of a regular nonagon with a side length of 7 and an apothem of 5

Find the area of a regular nonagon with a side length of 7 and an apothem of 5
asked 161k views
4 votes
Find the area of a regular nonagon with a side length of 7 and an apothem of 5

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User Luceos
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1 Answer

6 votes
a NONA=9, nonagon has 9 sides, so it's perimeter is 7+7+7+7+7+7+7+7+7, or 63, and we know the apothem.

bearing in mind that the area of a regular polygon is
(1/2)ap a = apothem, p = perimeter

so in this case that'd be (1/2)(5)(63).
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User Steven Sun
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