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Standard IX
Mathematics
Surface area of a sphere
Question
Find the surface area of the sphere whose radius is
35
cm
.
1540
cm
2
154
cm
2
15.400
cm
2
15400
cm
2
A
154
cm
2
B
15.400
cm
2
C
15400
cm
2
D
1540
cm
2
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Solution
Verified by Toppr
Given
⇒
Radius of the sphere,
r
=
35
cm
.
We know,
Surface area of the sphere is equal to
4
π
r
2
.
So,
A
=
4
π
r
2
=
4
×
22
7
×
35
×
35
=
15400
cm
2
Therefore, option
A
is correct.
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