Question

A copper cube of edge 3.3 cm is melted and drawn into a wire 3 mm in diameter. Find
in metres, the length of the wire.​

Answer 1

Answer:

952.380m(in m)

Explanation:

Edge of cube=3.3cm

A cube drawn into a wire whose,diameter=3mm

Length of wire=?

if d=3mm

then,r=1.5mm

As we known that a wire is always in the form of cylinder

Whose volume=volume of cube

π(r)2h=a3

22/7×(1.5)2h=(3.3)3

9.4285714286h=9.9

0.952380cm (in cm)

952.380m(in m)