Multiple choice

The slant height and the radius of a right circular cone are 11 cm and 6 cm, respectively. What is the curved surface area of the cone?

  1. $74πcm2$
  2. $60πcm2$
  3. $44πcm2$
  4. $66πcm2$
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D Correct answer
Explanation

The curved surface area of a right circular cone is πrl, where r is the radius and l is the slant height. Given r = 6 cm and l = 11 cm, CSA = π × 6 × 11 = 66π cm². This formula only gives the area of the curved surface, not including the base. The total surface area would additionally include πr² for the base.

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