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[nsbrando]

how to do this question???

A square pyramid has a volume of 90cm^3. its height is 7.5cm. calculate the area of its square base.

V=1/3 x A x h

 

[nifkeh]

V = 1/3* A*h
90 = 1/3 * A * 7.5
270 = 7.5 * A
therefore A = 270/7.5
= 36 cm^2