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Volume by Shells 9. Let R be the region bounded by x = 3:2, 1: = 0, and y = 3. Find the volume of the solid generated when R is revolved about the x-axis. 10. Let R be the region bounded by y = x x2 and y = 0. Find the volume of the solid generated when R is revolved about the y-axis. 11. Find the volume of the solid that is generated when the region in the first quadrant bounded by y = 12, x = l, and y = O is revolved about the linex = 2. 12. Find the volume of the solid that is generated when the region in the first quadrant bounded by y = 12, x = l, and y = O is revolved about the line y = 2