198 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire will b

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28 Dec 2017 Length of wire

198 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire will be:

OPtion

1) 25200 mm
2) 6300 cm
3) 25000 cm
4) 25000 mm
5) 252 m
6) 2520 cm
7) 6300 mm
8) 630 cm
9) 63 m
10) None of these

Solution

Radius in cm = (1/2)*(1/10) = 1/20 cm

Volume of Cylinder = Pi*r^2*l

So, Length l = 198/(Pi*r^2)
=> 198/(22/7 * 1/20 *1/20)
=> 25200 cm = 252 m

Correct Option: 5 Best Solution (0)