In the given figure, a circle touches the sides of the quadrilateral $$PQRS$$. The radius of the circle is 9 cm. $$\angle RSP = \angle SRQ = 60^\circ$$ and $$\angle PQR = \angle QPS = 120^\circ$$. What is the perimeter (in cm) of the quadrilateral ?

A

$$36\surd3$$

B

$$24\surd3$$

C

$$48\surd3$$

D

32