Q.

If the radius of the base of a right circular cone is 2 cm  and its slant height is 3.5 cm  and its slant height is , then its curved surface area is

 

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a

22

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b

77

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c

44

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d

154

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answer is C.

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Detailed Solution

In a right circular cone the radius of base

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Slant height

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Curved surface area

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