The radius of a circle is increasing uniformly at the rate of 3 cm/s. How fast is the volume of the cube increasing when the edge is 10cm long ?

Question

$(A)\; 60\pi \;cm^2/s$
$(B)\; 30\pi\; cm^2/s$
$(C)\; 20\pi \;cm^2/s$
$(D)\; 40\pi \;cm^2/s$