How does the volume of a cylinder change if its height or radius is doubled?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

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.

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?