A cube of edge 16cm is immersed completely in a rectangular vessel containing water. If the dimensions of the base of vessel are 20cm * 15cm , find the rise in water level?  Select.
A) 6 cm B) 8.25 cm C) 13.65 cm D) 15.12 cm E) 20.62 cm

Rationale: "increase in volume = volume of the cube = 16 * 16 * 16 cm ^ 3 rise in water level = volume / area = 16 * 16 * 16 / 20 * 15 = 13.65 cm answer is c"
Answer: C