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The radius of a sphere is 6 cm. It is me...

The radius of a sphere is 6 cm. It is melted and drawn into a wire of radius 0.2 cm. The length of the wire is
एक गोलक कौ त्रिज्या 6 से.मी. हैं। इसे पिघला कर 0.2 से.मी. त्रिज्या वाली एक तार बनाई गई। उस तार कौ लंबाई बताइए?

A

81 m

B

80 m

C

75 m

D

72 m

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