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Question

If a cone has a radius of 5 cm and height of 12 cm, then match the following.

A
13 cm
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B
90π cm2
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C
65π cm2
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Solution

Slant height of the cone,l=r2+h2
=52+122
=132
=13 cm

TSA of the cone =πr(r+l)
=π×5(5+13)
=5π×18
=90π cm2

CSA of the cone =πrl
=π×5×13=65π cm2


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