Question

If the radius of the base of a right circular cylinder is halved, keeping the  height same, what is the ratio of the volume of the reduced cylinder to that of the original.

A

B

C

D

Medium

Solution

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Correct option is
C

circular cylinder's radius=r
height=h
keeping the height same,  radius is halved
radius of new 
circular cylinder=r/2
So, ratio of volume = volume of reduced cylinder/volume of original cylinder


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