A cube of edge 15 cm is imersed completely in a rectangular vessel containing water. If the dimensions of the base of vessel are 20 cm * 15 cm, find the rise in waer level.
Pick
A) 11.25 cm .
B) 12.25 cm
C) 13.25 cm
D) 14.25 cm
E) none of these

Rationale: sol . increase in volume = volume of the cube = ( 15 * 15 * 15 ) cm ³ . ∴ rise in water level = [ volume / area ] = [ 15 * 15 * 15 / 20 * 15 ] cm = 11.25 cm . answer a
Answer: A