Density is the ratio of an object’s mass to volume. Density is a calculated value and not a measured value.

Mass is the amount of matter present in a body.

**From the formula to calculate density;**

We get;

**Example:**

Calculate the mass of a block of wood whose volume is 0.5 m³ and its density is 10 Kg/m³ .

Therefore, the mass of the block of wood is 5 Kg.