Question

2.2cu do of brass is to be drawn into into a cylindrical wire of diameter 0.50cm.Find the length of the wire

Answer 1

Volume of the brass =(2.2×10×10×10)cm cube.
=2200cm cube.
Radius of the wire =0.25 cm.
Let the length of the wire be x.
Then,volume of the wire =
$\pi \: r {}^{2} x$
$= \frac{22}{7} \times 0.25 \times 0.25 \times x = 2200$
$x = \frac{2200 \times 7}{22 \times 0.25 \times 0.25} = 11200cm = 112m$