The radius of two circles is
.
Center of one circle is
.
The circle equation is
.
Center of another circle is
.
The circle equation is
.
Graph the circle equations
and
.

Obsere the graph :
\By the axis of symmetry.
\The area of the shaded region is
.
Apply formula :
.






The area of the region is
.
The area of the region is
.