Learn how to calculate the density of an aluminum cube and the density of a foam cube.
These two cubes are solids and their density can be calculated using a ruler.
Density is calculated using mass divided by volume.
The volume of a cube is calculated using length times width times height.
The density of aluminum is around 2.8 grams per cubic centimeter and the density of the foam was .7 grams per centimeters cubed.
Any object with a density greater than 1 gram per centimeter cubed will sink and a solid with a density less than 1 gram per centimeter cubed will float

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