Quantitative Aptitude Ques 437

Question: If radius of base of right circular cylinder is doubled and height becomes halted, then the ratio of new volume of cylinder to the volume of original cylinder is

Options:

A) 2 : 1

B) $ \pi :2 $

C) 1 : 2

D) $ 2:\pi $

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ \frac{Volume,of,new,cylinder}{Volume,of,original,cylinder} $ $ \text{=}\frac{\pi {{(2r)}^{2}}( \frac{h}{2} )}{\pi r^{2}h}=\frac{2r^{2}h}{r^{2}h}=2:1 $
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