A stack of 75 identical plastic plates forms a column approximately 9 inches tall. At this rate, which of
the following is closest to the number of plates that
would be needed to form a column 20 inches tall?

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.