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I need help on this I don’t understand how to do this

I need help on this I don’t understand how to do this-example-1
User EJTH
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Answer:

Hi there!

The correct answer to this question is: The side length of the square base is 18 inches and the height of the pyramid is 9 inches.

Explanation:

The equation to find the volume of a square pyramid is V= (b^2)(h/3)

we are given the volume to be 972 inches cubed, additionally we know that the base of the square is x inches, the height is x/2

then we plug in and we get 972= (x^2)(x/2/3)

then you simplify to 972 = x^3 / 6 then you multiply six on both sides and you get x^3 = 5832

cube root on both sides and you get x = 18 that means the base is 18 inches and the height is x/2 then you plug 18 in and you get the height to be 9 inches.

User Mjswartz
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