Question

Two square pyramids have the same volume. For the first pyramid, the side length of the base is 5 in. and the height is 9 in. The second pyramid has a height of 1 in. What is the side length of the base of the second pyramid?

Thanks in advance!

Answer 1

Volume of first
= (1/3)(5^2)(9) = 75 cubic inches

2nd volume = 75
= (1/3)(b^2)(1) = b^2/3

b^2/3 = 75
b^2 = 225
b = √225 =15

Answer 2

Thanks for telling me how to do it Reiny! 'Preciate ya!