Question

the diameter of a sphere is 6cm.it is melted and drawn into a wire of diameter 0.1cm.find the length of the wire.

Answer 1

volume of sphere - volume of cylinder 2/3 piex radius^2 - pie x radius^2 x height then, 2/3 x 3x3 - 0.05 x 0.05 x h then, 6 -- 0.0025 x h then , h -- 6 / 0.0025 -- 2400 hence, lenght of the wire -- 2400