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Gold, which has a density of 19.32 g/cm^3, is the most ductile metal and can be...

Gold, which has a density of 19.32 g/cm^3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. If a sample of gold with a mass of 5.58 g is drawn out into a cylindrical fiber of radius 1.87 μm, what is the length (in km) of the fiber? Express your answer to 3 significant figures.

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