need a solution
Asked by | 20th Jan, 2009, 08:41: PM
The wire has weight 13.2 Kg=13200 gm
Now from the weight we can find the volume of the wire as it's given that when copper weighs 8.4 gm its vol is 1 cu.cm.
So when copper weighs 13200 gm, its volume =(13200/8.4) cu.cm= ( 11000/7) cu.cm
Now, let the length of the copper wire be l cm
We know that the shape wire is like the shape of a right circular cylinder.Let the radius of the wire =r.
So according to question , r=diameter/2=2 mm =2/10 cm
So volume of the wire ==(22/7)*(2/10)*(2/10)*(l).
we have the equation,
Solving we get
Answered by | 21st Jan, 2009, 11:45: AM
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