1.

$OPQ$ is a sector of a circle, centre $O$
$OAB$ is a sector of a circle, centre $O$

$AisthepointonOPsuchthatOA:AP=3:2\;BisthepointonOQsuchthatOB:BQ=3:2$

Angle $POQ=45^{\circ}$

The area of the shaded region is $\frac{81}{2} \pi {cm}^{2}$
Work out the perimeter of the shaded region.
Give your answer in terms of $\pi$.