81 Determine the volume of the right circu- 1. V = 7 cu.units 4 lar cone generated by rotating the region bounded y = ;r, the y-axis, and y = 3 about 77 O 2. V = -7 cu.units the y axis. O 89 3. V = -7 cu.units 73 O4V = 7 cu.units 85 0 5. V = 4 -7 cu.units