Question

The diameter of a metallic sphere is 6 CM the sphere is melted and drawn into long wire of uniform circular cross section if the length of the wire is 36 cm find its radius

Answer 1

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Answer 2

Given:

Diameter = 6cm

Radius = 3cm

Length of the wire = 36cm

Volume of the sphere = volume of the

wire

4/3×22/7×3×3×3 = 22/7×r^2×36

36/36 = r^2

1 = r^2

r=1

Radius = 1cm