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Byju's Answer
Standard IX
Mathematics
Volume of a sphere
If the curved...
Question
If the curved surface area of a solid sphere is
98.56
c
m
2
, then find the radius of the sphere.
A
2.8
c
m
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B
28
c
m
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C
6.8
c
m
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D
None of these
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Solution
The correct option is
C
2.8
c
m
Consider the given curved surface area
=
98.56
c
m
2
We know that the curved surface area of the sphere
=
4
π
r
2
So,
4
π
r
2
=
98.56
π
r
2
=
24.64
r
2
=
7.84
r
=
2.8
c
m
Hence, this is the answer.
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