If Y is the incenter of STU find each missing measure

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

What is the value of x in the equation7x+2y=48 when y=3