Q. 83.9( 21 Votes )

<span lang="EN-US

Answer :

Radius of sphere, R = 9 cm



Let the length of wire be H


Radius Of wire, r = 2 mm = 0.2 cm


Volume of wire , v = πr2H


As sphere is melted to make a wire,


V = v





H = 24300 cm


H = 243 m


The length of the wire formed is 243 m


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