If the lateral surface of a cylinder is `94. 2\ c m^2` and its heights is 5cm, find: `[U s e\ pi=3. 14]` radius of its base (ii) volume of the cylinder

Explanation

C.S.A of cylinder = `94.2cm^2`

Height, `h=5cm`

As we know that C.S.A of cylinder = `2pirh`

`94.2=2xx3.14xxrxx5`

`r=3cm`

Volume of cylinder, `V=pir^2h`

`V=3.14xx3^2xx5`

`V=141.2cm^3`