The slant height and the radius of a rig

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

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?

Options:

74π cm²

60π cm²

44π cm²

66π cm²

Correct Answer:

66π cm²

Explanation:

Slant height of the cone = 11cm

Radius of the cone = 6cm

We know that,

The curved surface area of a cone = πrl

= π×6×11 = 66π