Write the ratio of total surface area to the surface area of a cylinder of radius `r\ ` and height `h`

Explanation

Here, Radius=`rcm` and height=`hcm`

Ratios of T.S.A to the C.S.A of the cylinders = `2pir(r+h)/2pirh`

Ratios of T.S.A to the C.S.A of the cylinders = `r+h/h`

Hence, the required ratio is `r+h:h`.