The radius of the right circular cone is
and height is
.
The line is revolving about the
-axis.
The slope of the line equation is
.
The line equation is in the form of
.
Substitute
.
.
The line equation passes through the point
.

.
The curve equation is
.
The outer radius of the right circular cone is
.
The limits of the cone are
to
.
Disk method:
\The volume of the solid is
.
Substitute
,
and
.







.
The volume of the right circular cone is
.
The volume of the right circular cone is
.