Iron has a density of 7.87 g/cm3. How many pounds does 1.20 cubic feet of iron weigh? [453.6 g = 1 lb, 2.54 cm = 1 in, and 1 ft = 12 in.]

Question

Iron has a density of 7.87 g/cm³. How many pounds does 1.20 cubic feet of iron weigh? [453.6 g = 1 lb, 2.54 cm = 1 in, and 1 ft = 12 in.]

Answer 1

Converting the density, we get:

Then multiply 491.3 lb/ft³ by 1.2 ft³