An engineer is working with archaeologists to create a realistic Roman village in a museum. The plan for a balance in a marketplace calls for 100 granite stones, each weighing 10 denarium. ( The denarium was a Roman unit of mass: 1 denarium = 3.396g) The manufacturing process for making the stones will remove 20% of the material. If the granite to be used has a density of 2.75 g/cm^3, what is the minimum volume of granite that the engineer should order?
P.s, already have an answer, I'm just trying to see it it is correct, thanks!