Q. 15.0( 2 Votes )

The slant height of a cone is 10 cm and the radius of its base is 7 cm. What is its curved surface area?

Answer :

We have


Given: slant height of the cone, l = 10 cm


Radius of the base of the cone, r = 7 cm


We need to find curved surface area of this cone.


Curved surface area of the cone is given by


CSA = πrl


Substituting the given values in the above equation,


CSA = 22/7 × 7 × 10


CSA = (22 × 7 × 10)/7


CSA = 220


Thus, curved surface area of cone is 220 cm2.


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