A rod of 2 cm diameter and 30 cm length ...

A rod of 2 cm diameter and 30 cm length is converted into a wire of 3 m length of uniform thickness. The diameter of the wire is

A

`2//10 cm `

B

`21//10 cm `

C

`11//10 cm `

D

`1//10 cm `

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The correct Answer is:

B

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