Question

A solid metallic cylindrical rod of diameter 1cm and length 8cm is drawn into a cylindrical wire of length 18m of uniform thickness.Find the thickness of the wire
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Answer 1

Answer:

r = 1/30

Step-by-step explanation:

Radius = 1/2 cm

Length = 8cm

Now,

volume of rod = volume of wire

πR²h = πr²H

(1/2)² x 8 = r² x 1800

2 = 1800r²

$\sqrt{\frac{1}{900} }$ =  r²

r = 1/30