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 .