Question

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

Answer:

51.25

Step-by-step explanation:

Do you mean the surface area of the pyramid?

Base = $2.5^2$ = 6.25

Triangles = $\frac{9 * 2.5 * 4}{2}$

9 * 2.5 * 2 = 45

45 + 6.25 = 51.25