Find the area of a regular octagon with a side length of 5 cm. Round to the nearest tenth

BaskInEminence asked Jun 2, 2022

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BaskInEminence asked Jun 2, 2022

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15 votes

Answer:

120.7 cm²

Explanation:

2( 1 + √2 ) a² = 2( 1+ √2 ) · 5² ≈ 120.7

DaWilli answered Jun 8, 2022

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