Density triangle

Density can be calculated using the equation:

Density = \frac{mass}{volume}

\rho = \frac{m}{v}

\rho = density in g/cm3.

The symbol for density is the Greek letter rho, \rho.

m = mass in g.

v = volume in cm3.

\rho =\frac{\text{m}}{\text{v}} \rho = m \div v
m = v\rho m = v \times \rho
v =\frac{\text{m}}{\rho} v = m \div \rho


What is the density of a material if 450 cm3 of it has a mass of 200 g?

\rho =\frac{\text{m}}{\text{v}}

m = 200 g

v = 450 cm3

\rho =\frac{\text{200~g}}{\text{450~cm}^3}

\rho = 0.44 g/cm3

The density of the material is 0.44 g/cm3