The function is .
Disk method: Vertical axis of revolution.
\Formula for the volume of solid using the disk method,.
The curve equation is .
Solve for .
.
\
In this case .
From the graph, integral limits are and
.
Volume of the solid is .
.
Therefore, the integral that gives the volume of the solid formed by revolving the region about the -axis is
.
The integral that gives the volume of the solid formed by revolving the region about the -axis is
.