A copper wire of length 36 m and diameter 2 mm is melted to form a sphere. The r

Question

A copper wire of length 36 m and diameter 2 mm is melted to form a sphere. The radius of the sphere (in cm) is :

Options:

A . 2.5 cm

B . 3 cm

C . 3.5 cm

D . 4 cm

Answer: Option B

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