Question

If the circumference of the base of a cylinder is $44cm$ and height $20cm$, then its lateral surface area is

• A. $440sq.cm$
• B. $880sq.cm$
• C. $88sq.cm$
• D. $44sq.cm$

Answer 1

The correct option is B $880sq.cm$

Given : Circumference of a cylinder $=2\pi rh=44cm$ and height$\left(h\right)=20cm$

Lateral surface area of a cylinder $=2\pi rh$

$=$ circumference of the base $\times$ height of the cylinder

$=44\times 20=880c{m}^2$

$\therefore$ Lateral surface area of a cylinder is $880sq.cm$.