Find the volume of a cylinder whose
(i) `r=3. 5 cm , h=40 cm`
(ii) `r=2. 8 cm , h=15 cm`

Explanation

(i)`r=3.5cm`
`h=40cm`
Volume of a cylinder `=pir^2h=22/7xx(3.5)^2xx40=1540`
`therefore` Volume of cylinder`=1540cm^3`

(ii) `r=2.8 cm`
`h=15 cm`
Volume of a cylinder`=pir^2h=22/7xx(2.8)^2xx15=369.6`
`therefore` Volume of cylinder`=369.6cm^3`