charlenefoster3107 charlenefoster3107

18-04-2021
Mathematics

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Find the Surface Area of the Square Pyramid.

Find the Surface Area of the Square Pyramid class=

Respuesta :

maggielee724 maggielee724

18-04-2021

Answer:

279 in.²

Step-by-step 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

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