If each edge of a cube is doubled, then its volume :
Answers
A) becomes 8 times	B) becomes 9 times	C) is double	D) becomes 6 times	E) none

Rationale: sol . let original edge = a . then , volume = a ³ new edge = 2 a . so , new volume = ( 2 a ) ³ = 8 a ³ ∴ volume becomes 8 times answer a
Answer: A