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Mathematics
Mathematics
Problem
If
r
r
r
is the radius of the sphere, then the surface area of the sphere is given by: (1)
4
π
r
2
4\pi r^2
4
π
r
2
(2)
2
π
r
2
2\pi r^2
2
π
r
2
(3)
π
r
2
\pi r^2
π
r
2
(4)
4
3
π
r
3
\frac{4}{3}\pi r^3
3
4
π
r
3
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