If each side of a cube is doubled, then its volume? .

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If each side of a cube is doubled, then its volume? .

1. Is doubled
2. Becomes 4 times
3. Becomes 6 times
4. Becomes 8 times

Correct Option: D

Let the edge of original cube = x cm
Edge of new cube = (2x) cm
Ratio of their volumes = x³ : (2x)³
= x³ : 8x³
= 1 :8

Thus the volumes be comes 8 times.