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 27.63 g. is pressed into a leaf of 1.000 micrometers thickness, what is the area of the leaf?
b) Instead of a leaf, the gold is drawn into a cylindrical fiber of radius 2.5 micrometers, what is the length of the fiber?