Multiple choice

The radius and vertical height of a cone is 5 cm and 12 cm respectively. Find its curved surface area.

  1. 197.6 cm2

  2. 213 cm2

  3. 204.3 cm2

  4. 186.4 cm2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Slant height l = √(r² + h²) = √(25 + 144) = √169 = 13 cm. Curved surface area = πrl = (22/7) × 5 × 13 = 204.3 cm². Note: Use π = 22/7 or 3.14 as specified in your curriculum.

Keep practicing — related questions