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A copper wire of radius 0.5 mm and lengt...

A copper wire of radius 0.5 mm and length `42 2/3` m is melted and converted into a sphere of radius R cm. What is the value of R?
त्रिज्या 0.5 mm और लंबाई `42 2/3` मी वाले एक ताम्बे के तार को पिघलाकर त्रिज्या R सेमी वाले एक गोले का रूप दिया जाता है |R का मान क्या है ?

A

3

B

2

C

1.5

D

1.8

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