Imani bought books for college and paid 35% of the total cost. her parents paid the remaining balance of 438.75. how much was the total cost for imanis books?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Factor the polynomial by its greatest common monomial factor.

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap