Brass is a copper-zinc alloy. What is the mass in grams of a brass cylinder having a length of 2.62 in. and a diameter of 0.754 in. If the composition of the brass is 60.0% copper and 40.0% zinc by mass? The density of copper is 8.92 g/cm3 and the density o zinc is 7.14 g/cm3. Assume that the density of the brass varies linearly with composition.