The volume of a right circular cylinder is 180 $$cm^{3}$$ , the area of its base is 30 $$cm^{2}$$ and the height is 6 cm then the diameter of the cylinder is (in cm):

A

$$2\sqrt{30}$$

B

$$\sqrt{30}$$

C

$$2\sqrt{\frac{30}{\pi}}$$

D

$$\sqrt{\frac{30}{\pi}}$$