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The diameter of a sphere is 6cm. It is...

The diameter of a sphere is 6cm. It is melted and drawn into a wire of diameter 0.2 cm. Find the length of the wire.

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Let the length of the wire be h cm.
Volume of material in wire = Volume of the sphere of radius `6 cm`
`pixx(0.1)^2xxh=4/3xxpixx(3)^3`
`h=3600cm=36m`
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