Math Assessement
July 10th, 2020
Two coils which are made by winding copper wire of different gauges and length have the same mass. The first coil is made by winding 270 metres of wire with cross-sectional diameter 2.8 mm while the second coil is made by winding a certain length of wire with a cross-sectional diameter of 2.1 mm.
Find the length of the wire in the second coil.