Question

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

Answer 1

1571.42 cubic cm approximately

Answer 2

Volume of wire 13.2 kg = 13.2*1000/8.4 cm3

volume of the wire = Pi x D x L

then L = 125 m