MathematicsIf 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 

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

 

  1. A
    44

     
  2. B
    77

     
  3. C
    22

     
  4. D
    154

     

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    Solution:

    In a right circular cone the radius of base

    Slant height

    Curved surface area

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