# How can you calculate mass if density and volume are known?

##### 1 Answer

Jan 6, 2017

#### Explanation:

Density is mass per unit volume. The equation is

If density and volume are already known, you can calculate mass by multiplying density by volume.

**Example**

The density of aluminum is

The mass of

The following device is helpful when determining density, mass, or volume, when two of the others are known. Cover the variable that you want to calculate, then do the calculation for the other two variables as shown on the triangle.