The curve equation is
, the line is
,
and
.
Graph the functions
and
.

Since
values varies from
to
, then integrate with respect to
.
Determine the area of the region using approximating rectangles.
\Draw the typical rectangles and label its heght and width using graphng utility.
\
Observe the graph:
\Area of the region,
.

Area of the region is
sq-units.
Area of the region is
sq-units.