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Question

When 32 litres of water is added, 50% of a cubical aquarium is filled. The height of the aquarium is cm.

A
40
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B
35
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C
50
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Solution

The correct option is A 40
50% of the aquarium is filled with 32 litres of water.
100% of the aquarium would be filled if 32 litres of more water is added.

Total capacity of aquarium =32+32=64 l

We know that
64 l = 64000 cm3

Volume of a cube =a×a×a
64000=40×40×40 a=40

For a cube, all the sides are equal.
Therefore, the height of the aquarium would be 40 cm.

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