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  1. The perimeter of one face of a cube is 20 cm. Its volume will be
    1. 625 cm³
    2. 100 cm³
    3. 125 cm³
    4. 400 cm³
Correct Option: C

Perimeter of a face of cube = 20 cm.

∴ An edge of cube =
20
 = 5 cm.
4

∴ Volume of cube = (edge)³ = (5)³ = 125 cu. cm.


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