the radius of cone is 10 cm and its slant height is 21 cm . find curved surface area of a cone​

1 thought on “the radius of cone is 10 cm and its slant height is 21 cm . find curved surface area of a cone​”

1. Answer:

   So CSA of a cone is πrl.

   So, CSA=π×10×21

   =22/7×10×21

   =3×10×22= 660cm²

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