A sphere, a cylinder and a cone have the same radius and same height. Find the ratio of their volumes.

Explanation

Volume of the sphere`=4/3pir^3`
Volume of the cylinder`=pir^2h`
Volume of the cone`=1/3pir^2h`
ration of their volume `=4/3pir^3:pir^2h:1/3pir^2h(h=2r)`
`=>4/3pir^3:pir^2(2r):1/3pir^2(2r)`
`=>4pir^3:3xx2pir^3:2pir^3`(Multiply by 3)
`=>4r^3:6r^3:2r^3`
`4:6:2`
`2:3:1`