Question

If \( r \) is the radius of the base of a cone and \( l \) is its slant height, then the curved surface area of the cone is:

• A. \( 3\pi rl \)
• B. \( \pi rl \)
• C. \( \frac{1}{3} \pi rl \)
• D. \( 2\pi rl \)

Hint:

For cones, Curved Surface Area formula: \[ \text{CSA} = \pi r l \]

Answer 1

The Correct Option is B

Curved surface area of a cone:
\[ \text{CSA} = \pi r l \]