The curved surface area of a cone whose base radius is 7 cm and slant height is 10 cm is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 220 cm2.
Radius = 7 cm and slant height = 10 cm
The curved surface area of the cone = πrl
⇒ CSA = (22/7) × 7 × 10
⇒ 220 cm2