Q. 4

Answer :

Given: 2.2 dm^{3} of brass is to be drawn into a cylindrical wire 0.25 cm in diameter.

Diameter of cylindrical wire = 0.25cm

Radius of wire, r =

Let length of wire be h

Volume of the cylinder = πr^{2}h

Volume of brass of 2.2dm^{3} is equal to volume of cylindrical wire

⇒ h = 448m

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