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Question

The perimeter of one face of a cube is 20 cm. Its volume will be _________.


A

125 cm3

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B

400 cm3

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C

250 cm3

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D

625 cm3

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Solution

The correct option is A

125 cm3


Number of edges used to find perimeter = 4.

One Edge of cube
=perimeter of 1 facenumber of edges in one face

=204=5 cm

Let the edge be represented by 'a'.

Volume of cube
=a3
=a×a×a
=5×5×5
=125 cm3


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