If the radius of a sphere is 2cm, then the curved surface area of the sphere is equal to:
A
8πcm2
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B
16cm2
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C
12πcm2
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D
16πcm2
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Solution
The correct option is C16πcm2 Curved surface area of sphere =4πr2. Here, r=2cm. ∴ Curved surface area of sphere =4π(2)2=16πcm2. Therefore, option D is correct.