Problem 16. (1 point) The base of a solid is a circular disk with radius 3. Parallel cross sections perpendicular to the base are squares. Find the volume of the solid. Answer(s) submitted: (incorrect) Problem 17. (1 point) Find the volume of a frustum of a pyramid with square base of side 22, square top of side 7 and height 14. Volume= Answer(s) submitted: (incorrect) Problem 18. (1 point) Find the volume of a frustum of a right circular cone with heir 15, lower base radius 28 and top radius 9. Volume = Answer(s) submitted: (incorrect)