Gold, which has a density of 19.32 g/cm³, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a)
If a sample of gold with a mass of 2.175 g. is pressed into a leaf of 5.874 um thickness, what is the area of the leaf? (b) If, instead, the
gold is drawn out into a cylindrical fiber of radius 2.100 μm, what is the length of the fiber?