If in the given figure, ∠ C =∠ D =90^°, ∠ B =60^° and AP =3 cm, then the area of the shaded region is:

If in the given figure, $\displaystyle \angle \mathrm{C}=\angle \mathrm{D}=90^{\circ}, \angle \mathrm{B}=60^{\circ}$ and $\displaystyle \mathrm{AP}=3 \mathrm{~cm}$, then the area of the shaded region is :