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# Volume of a right circular cylinder is 60 l. If radius of cylinder is

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Manager
Joined: 20 Mar 2015
Posts: 54
Volume of a right circular cylinder is 60 l. If radius of cylinder is  [#permalink]

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14 Jun 2016, 09:21
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Difficulty:

45% (medium)

Question Stats:

50% (00:54) correct 50% (00:53) wrong based on 62 sessions

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Volume of a right circular cylinder is 6o L. If radius of cylinder is doubled, then what will be the increase in volume?

A.120 L
B.180 L
C.240 L
D.300 L
E.360 L
Math Expert
Joined: 02 Aug 2009
Posts: 8305
Re: Volume of a right circular cylinder is 60 l. If radius of cylinder is  [#permalink]

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14 Jun 2016, 09:25
bimalr9 wrote:
Volume of a right circular cylinder is 6o L. If radius of cylinder is doubled, then what will be the increase in volume?

A.120 L
B.180 L
C.240 L
D.300 L
E.360 L

$$Pi* r^2*h = 60$$....
double the radius.....$$Pi* (2r)^2*h = Pi* 4*r^2*h = 4*60 = 240....$$

IMPORTANT.. we are looking at the increase so 240-60 = 180
B
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Location: India
Concentration: Social Entrepreneurship, Healthcare
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Re: Volume of a right circular cylinder is 60 l. If radius of cylinder is  [#permalink]

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22 Nov 2019, 00:39
The tricky part is to find the 'increase' and not the final volume.

Increase = Final volume - initial volume = 180L
Re: Volume of a right circular cylinder is 60 l. If radius of cylinder is   [#permalink] 22 Nov 2019, 00:39
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