Question

2.2 cubic dm of brass is to be drawn into a cylindrical wire 0.25 cm in diameter. Find the length of the wire.

Answer 1

We know that, $1dm=10cm$

So, volume of brass $=2.2d{m}^3=2200c{m}^3$

Let the length of the wire be "$l$".

So,$volumeofwire=2200c{m}^3$

$\Rightarrow \frac{22}{7}\times \frac{0.25}{2}\times \frac{0.25}{2}\times l=2200$

$\therefore l=44800cm=448m$