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Question

If the curved surface area of a solid sphere is 98.56cm2, then find the radius of the sphere.

A
2.8cm
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B
28cm
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C
6.8cm
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D
None of these
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Solution

The correct option is C 2.8cm
Consider the given curved surface area =98.56 cm2

We know that the curved surface area of the sphere
=4πr2

So,
4πr2=98.56

πr2=24.64

r2=7.84

r=2.8 cm

Hence, this is the answer.

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