Q8 of 63 Page 21

The area of the curved surface of a cone is 60π cm2. If the slant height of the cone be 8 cm, find the radius of the base.

We have,


Curved surface area of cone = 60π cm2


Slant height l = 8 cm


So , πrl = 60π


rl = 60


= r ==7.5 cm


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