1. Find the volume of the solid formed by rotating the region enclosed by
x=0, x=1, y=0, y=7+x^5 about the x-axis.

2. Find the volume formed by rotating the region enclosed by:
x=4y and y3=x with y0 about the y-axis.

3. The region between the graphs of y=x2 and y=4x is rotated around the line y=16.
The volume of the resulting solid is