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Question

The perimeter of a cube is 60 cm. Its volume will be _________.
  1. 125 cm3
  2. 115 cm3
  3. 100 cm3
  4. 118 cm3


Solution

The correct option is A 125 cm3

Number of edges used to find perimeter = 12.

Length of one Edge of cube
=perimeter of cubenumber of edges in cube

=6012=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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