Question

the diameter of A copper sphere is 6 CM the sphere is melted and is drawn into a long wire of uniform circular cross section if the length of the wire is 36 cm find its radius
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Answer 1

Answer:

Step-by-step explanation:

Given,

The diametre of sphere=6cm

Than,the radius =6/2cm

=3cm

Now,

This copper sphere is melted and form a circular wire whose lenght is 36 cm

Now

The volume of sphere=the volume of wire

So,

4/3×pie×r^3=pie× r^2×h

4/3×22/7×6^3=22/7×r^2×36

905.142=113.142×r^2

r^2=905.142/113.142

r^2=8

r=2root2