Find the volume of a sphere whose surface area is 154 `c m^2`

Explanation

Surface area of a sphere`=4pir^2=154cm^2`
`=>4xx22/7r^2=154cm^2`
`r^2=154/4xx7/22`
`r^2=49/4`
`r=sqrt49/4=7/2=3.5cm`
volume of sphere`=4/3pir^3`
`=>4/322/7xx(3.5)^3`
`=88/21xx42.875=179.67cm^3`