44 cubic centimeters of silver is drawn into a wire 4 mm in diameter. The length if the wire in mete

M4maths Previous Puzzles

17 Sep 2019 Volume

44 cubic centimeters of silver is drawn into a wire 4 mm in diameter. The length if the wire in meters will be:

OPtion

1) 3.5cm
2) 35cm
3) 35cm
4) 3500m
5) 35000cm
6) 3.5m
7) 0.35m
8) 35m
9) 350m
10) None of these

Solution

Let the length of the wire be h
Radius=4/2 mm = 1/5 cm
Volume = πr^2h= 44
=> (22/7)∗(1/5)∗(1/5)∗h = 44
=>h = (44∗5∗5∗7)/22 = 350cm = 3.5m

Correct Option: 6 Best Solution (0)