The curve equation is
.
Graph the equation
.

Observe the graph:
\The first half of the curve lies between
.
Area of the region enclosed by the curve is
.
The boundaries of the half of the curve are
and
.
Area of the region enclosed by the curve
:
Area of the region enclosed by loop of the curve is
.










.
Area of the region enclosed by one loop of the curve is
.
Area of the region enclosed by one loop of the curve is
.