Discussion of Question with ID = 049 under Volume-and-Surface-Areas

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Question

How many boxes measuring 1 m × 1m × 1 m should be dropped into a water tank 6 m × 8 m so that the water level rises by 1 m?

A

48 .

B

50 .

C

46 .

D

52 .

Soln.
Ans: a

The volume of water to be displaced is 6 × 8 × 1 cu. m. This should be equal to the volume of the boxes to be dropped. So N × 1 × 1 × 1 = 6 × 8 × 1, which gives N = 6 × 8 = 48.


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