If each edge of a cube is doubled, then its volume: · ABC26GN4879
Subject: General Aptitude · Chapter: Volume and Surface Area
If each edge of a cube is doubled, then its volume:
(a)is doubled
(b)becomes 4 times
(c)becomes 6 times
(d)becomes 8 times
Answer
Explanation
Let original edge $=a$. Then, volume $=a^{3}$. New edge $=2 a$. So, new volume $=(2 a)^{3}=8 a^{3}$. $$\text { ∴ Volume becomes } 8 \text { times. }$$
Explanation as extracted from the printed page; notation may be imperfect.
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