Find the Surface Area of the Square Pyramid.

Piotr Semenov asked Jun 21, 2022

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Piotr Semenov asked Jun 21, 2022

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19 votes

Answer:

279 in.²

Explanation:

square: 9 × 9 = 81

the 4 congruent triangles: 9 × 11 ÷ 2 = 49.5, 49.5 × 4 = 198

square + 4 congruent triangles = 81 + 198 = 279

Nick Butler answered Jun 27, 2022

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