Question

9 yd
2.5 yd find the surface area of the square
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Answer 1

51.25

Explanation:

Do you mean the surface area of the pyramid?

Base =
`2.5^2` = 6.25

Triangles =
`(9 * 2.5 * 4)/(2)`

9 * 2.5 * 2 = 45

45 + 6.25 = 51.25