The curve is
and the lines are
,
.
Region is rotated about
-axis.
Method of Cylinders :
\The volume of the solid obtained by rotating about
-axis, the region of the curve
from
to
is
.
Rewrite the curve
as
.
Find the point of intersections.
\Find the values of
for
and
.

Integral limits are
and
.
Find the volume obtained by rotating region about
-axis, bounded by the curves
and
from
to
is
.


.
Volume of the solid is
.
Volume of the solid is
.