A cylindrical vessel of radius 16 cm contains water to a depth of 20 cm. A solid spherical metallic ball is dropped into the vessel which is fully submersed and raises the level of the water in the vessel by 9 cm. What is the surface area (in cm2) of the ball? (Assume no overflow of water)
1
288\(\pi\)
2
784\(\pi\)
3
324\(\pi\)
4
576\(\pi\)