Q38 of 62 Page 22

Find the length of 13.2 kg of copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.

Given,


weight of copper wire = 13.2 kg


Diameter of wire = 4 mm


Radius of wire =


Let length of wire = h cm


so,


weight of 1 cubic cm wire = 8.4 gm


=


=


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