# In a cylinder its radius is halved and height is doubled then find the ratio of volume of original to new one.

2
by rekharose

2014-12-24T10:29:10+05:30

Original Volume of cylinder= 22/7 x r^2 x h

when radius= r/2 and height= 2h

then new volume= 22/7 x (r/2)^2 x (2h)

Original volume/ new volume= 2

therefore when radius is halved and height is doubled then the new volume becomes 1/2 times of the original volume.

2014-12-24T12:29:15+05:30
Volume of a cylinder =  r²h
original volume         =  r²h