A cone has height which is half of 16.8 ...

A cone has height which is half of 16.8 cm, while diameter of its base is 4.2 cm. It is melted and recast into a sphere. Find the surface area of the sphere.

A

55.44 sq cm

B

60 sq cm

C

65.58 sq cm

D

59 sq cm

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The correct Answer is:

A

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