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8. Let V be the volume of the solid obtained by rotating about the y-axis the region bounded by y = Vx and y = x2. Find V both by slicing and by cylindrical shells. In both cases draw a diagram to explain your method. 9-14 Use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis. 9. xy = 1, x= 0, y= 1, y=3 10. y = Vx, x = 0, y = 2 11. y = x3/2, y = 8, x =0 allende Isonbally 12. x = -3y2 + 12y - 9, x =0 nobulover to bifoe 13. x = 1 + (y - 2)2, x=2 14. x + y = 4, x= y? - 4y+4/