Question

A cube of edge 15 cm is immersed completely in a rectangular vessel
containing water . If the dimensions of the base of vessel are 20 cm x
15 cm, find the rise in water level.



Options:
A .  9.75 cm
B .  10.25 cm
C .  11.25 cm
D .  12.75 cm
Answer: Option C

Increase in volume = Volume of the cube = (15 x 15 x 15) cm3
Rise in water level = volume/area = (15 x 15 x 15)/(20 x 15) cm = 11.25 cm




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