The curve equations are and
.
Shell method:
\Vertical axis of revolution.
\The volume of the solid is .
The distance from the center of the rectangle to the axis of revolution is .
Find the limits of integration by solving points of intersection:
\ and
.
and
.
Find the volume of the region from to
is revolved around the
-axis.
The height of the rectangle is .
Substitute ,
and
in
.
.
.