The density of iron is 7900kg / cm3, the mass of an iron ball is 395kg, and the volume is 100cm3 (1) Is the iron ball solid or hollow (2) if it is hollow, what is the volume of the hollow part

The density of iron is 7900kg / cm3, the mass of an iron ball is 395kg, and the volume is 100cm3 (1) Is the iron ball solid or hollow (2) if it is hollow, what is the volume of the hollow part

There is a problem with the data in the title, "the density of iron is 7900kg per cubic centimeter" is wrong, which should be "the density of iron is 7900kg per cubic centimeter", "the mass of an iron ball is 395kg, and the volume is 100 cubic centimeter" is also wrong, which should be "the mass of an iron ball is 395g, and the volume is 100 cubic centimeter"