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Someone please help.

Someone please help.-example-1

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Answer:

SA = 74.4 square yards

V = 32.7 cubic yards

Explanation:

formula for SA for square pyramid: Area of Base + Area of 4 Triangles

SA = 3² + 4[(3 x 10.9) ÷ 2]

= 9 + 4(16.35)

= 9 + 65.4

formula for Volume for square pyramid: 1/3 · Area of Base · Height

V = 1/3 · 9 · 10.9

= 3 × 10.9

= 32.7

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