Question

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class - 9 question​

Answer 1

Answer:

Hence, radius the cone is 7.5 cm.

Step-by-step explanation:

We know that the curved surface area of a cone with radius r and slant height l is CSA=πrl.

It is given that the curved surface area of the cone is CSA=60π cm

2

and the slant height is l=8 cm, therefore,

CSA=πrl

⇒60π=π×r×8

⇒60=8r

⇒r=

8

60

=7.5