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Question

The surface area of a sphere of radius 4 cm is


A

52π sq. cm

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B

88π sq. cm

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C

56π sq. cm

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D

64π sq. cm

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Solution

The correct option is D

64π sq. cm


Surface area of a sphere of radius 'r' is given by 4πr2
Hence the surface area of the sphere of radius 4 cm
= 4π×42
= 64π sq. cm

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