Chapter 6.4, Problem 2QC

  Write the volume integral in Example 4b in the case that R is revolved about the line y = –5.

Example 4 Revolving about other Lines

Let R be the region bounded by the curve $y=\sqrt{x}$, the line y = 1, and the y-axis (Figure 6.49a).

  b.    Use the disk/washer method to find the volume of the solid generated when R is revolved about the line y = 1 (Figure 6.49).