Q. 274.3( 6 Votes )
Find the length of 13.2 kg of copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.
weight of copper wire = 13.2 kg
Diameter of wire = 4 mm
Radius of wire =
Let length of wire = h cm
weight of 1 cubic cm wire = 8.4 gm
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