Question

Write the curved surface area of a right circular cylinder whose radius is 3 cm and height is 5 cm.

• A. $30\pi {cm}^2$
• B. $20\pi {cm}^2$
• C. $35\pi {cm}^2$
• D. $40\pi {cm}^2$

Answer 1

The correct option is A $30\pi {cm}^2$

Radius of cylinder $=3\text{cm}$

Height of cylinder $=5\text{cm}$

Cross sectional area of cylinder $=2\pi rh=2\times \pi \times 3\times 5=30\pi {\text{cm}}^2$