Question

The curved surface area of a right circular cylinder of radius $1cm$ and height $1cm$ is equal to

• A. $\pi$ ${cm}^2$
• B. $2\pi$ ${cm}^2$
• C. $3\pi$ ${cm}^2$
• D. $2$ ${cm}^2$

Answer 1

The correct option is B $2\pi$ ${cm}^2$

We have,

$h=1cm,r=1cm$

We know that curved surface area of the cylinder

$=2\pi rh$

$=2\pi \times 1\times 1$

$=2\pi c{m}^2$

Hence, this is the answer.