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Question

A cubical container with a side of 5 cm is filled with water up to a height of 2 cm.
extra water should be added to fill the container.

A
50 cm3
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B
100 cm3
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C
75 cm3
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Solution

The correct option is C 75 cm3

Given,
Side of cubical container (l=b=h) =5 cm

Area of the base (A) =l×b=5×5=25 cm2

Volume of the container = A×h=25×5=125 cm3

Water is filled up to a height of 2 cm.

So, volume of the filled portion =(A×h)=25×2=50 cm3

Amount of water to be added = Volume of the container - Volume of the filled portion

=125 cm350 cm3=75 cm3

Thus, the amount of water to be added to completely fill the container is 75 cm3.


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