Side of a square is 6 cm. What is the area of the largest circle that can be drawn inside the square?
(Take $$\pi = \frac{22}{7}$$)

A

$$\frac{198}{7}  cm^2$$

B

$$\frac{156}{7}  cm^2$$

C

$$\frac{252}{7}  cm^2$$

D

$$\frac{318}{7}  cm^2$$