Surface area of a sphere whose radius is 1 unit.
Surface area of a sphere whose radius is 1 unit.
A) 2π
B) 4π
C) 4πr2
D) 2πr2
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2 Answers
Correct option is (B) 4π
r = 1 unit
Surface area of sphere \(=4\pi r^2\)
\(=4\pi\times1^2=4\pi\) square units
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