Question

If a sphere of radius 18cm is melted and form it a wire of radius 0.5cm,then the total length of wire obtained in meters is​

Answer 1

(4/3)πR³=πr²h

(4/3)18*18*18=h/4

h=31104cm

=311.04m

Here the wire is assumed to be in the shape of a cylinder. So, volume of sphere = volume of cylinder.