bill dupp lumber yard charges $2.80 for each cubic foot of sand delivered, plus $50 to deliver the sand. is this function continuous or discrete?

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.