Final answer:
Density can be calculated by dividing the mass of a substance by its volume using the formula D = mass ÷ volume.
Step-by-step explanation:
The density of a substance can be calculated by dividing its mass by its volume. For example, if you have a cube with a mass of 100 grams and a volume of 50 cubic centimeters, the density would be 2 grams per cubic centimeter. The formula for density is D = mass ÷ volume.