the radius of a metallic sphere is 3 cm.It is melted and drawn into a long wire having a circular cross section of a diameter as 0.2 cm.show that the length of the wire is 36 cm.
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volume of sphere = volume of cylinder
= 4/3πr cube= πr sq h
4/3× 27= 0.1×0.1 h
h= 36× 100= 3600cm 36 m
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