The surface area of a rectangular prism is 72 in.² and its lateral area is 30 in.² The area of a base of the prism is _____ in.².

Question

anonymous · Answer

SA = 2 pi r^2 + 2pi r * h , solve for pi r^2

zepp · Answer

Since the surface area is 72 inch ^2 and the lateral area is 30 in ^2, and 
the surface area = lateral area + base area

Can you find the solution all by yourself? :)

anonymous · Answer

@kalche, ???

zepp · Answer

It's not a cylinder, kalche.

anonymous · Answer

oh my bad

anonymous · Answer

I am curious if the statement, 'area of a base' means just the bottom?

zepp · Answer

Yeah, what you will find by substracting the lateral area off the surface area would be the area of the baseS, you need 1 base, so you have to divide the answer by 2.