Question

State True or False .
The total surface area of a cylinder of radius 'r' and height 'h' is $2\pi r(h+r)$ .

Answer 1

True
A cylinder has two circular faces, one at the top and other at the bottom, in addition to its curved region.
Therefore, total surface area
= Curved surface area + sum of areas of 2 circular faces
$=2\pi rh+2\pi r^2$
$=2\pi r(h+r)$