Question

The diameter of the base of a right circular cylinder is 10 m and its height is 21 m. Find its curved surface area.

• A. 210 $m^2$
• B. 1320 $m^2$
• C. 165 $m^2$
• D. 1300 $m^2$

Answer 1

The correct option is C 165 $m^2$

Curved surface area of cylinder $=2\pi rh$
$=2\times \frac{22}{7}\times \frac{10}{2}\times 21=165m^2$