Example 4: Let R be the region bounded by the curve y=sqrt(x), the line y=1, and the y=axis. Use the disk/washer method to find the volume of the solid generated when R is revolved about the line y=1. Answer: pi/6 Example 5: Use the disk method to find the volume of the solid formed by revolving the region bounded by the functions f (x) = 2 - x2 and g(x) = 1 about the line y = 1. For this problem, the points of intersection are x = 1 and x = -1. The answer is 167/15