Volume of a right circular cylinder is 6o L. If radius of cylinder is doubled, then what will be the increase in volume?
Choose the correct choice:	A) 120 l	B) 180 l	C) 240 l	D) 300 l	E) 360 l

Rationale: pi ∗ r ^ 2 ∗ h = 60 double the radius . . . . . pi ∗ ( 2 r ) ^ 2 ∗ h = pi ∗ 4 ∗ r ^ 2 ∗ h = 4 ∗ 60 = 240 important . . we are looking at the increase so 240 - 60 = 180 answer : b
Answer: B