A cylinder of same height and radius is placed on the top of a hemisphere. Find the curved surface area of the shape if the length of the shape by 7cm.

Explanation

Radius is equal to the height of the cylinder but Radius is `2r`.
Radius, `2r=7cm`

`r=7/2cm`

Height, `h=7cm`

Total Surface area = `2pirxxr+2pir^2`

`4pir^2`

`4xx22/7xx(7/2)^2`

`154cm^2`

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