STEP 2. Create a formula triangle
e.g. for Speed, Distance and Time
The density of pure gold is 19.3 g/cm ^{3}.
What is the volume of a gold bar that has a mass of 0.454 kg?
Begin by checking that all of the units are consistent.
Density is given in g/cm ^{3}, so convert the volume of the gold bar into grams to match the units.
0.454 kg = (0.454 × 1000) g = 454 g
Use the units given for density to help you decide what calculation needs to be carried out.
The units of density are g/cm ^{3}, so divide the mass (g) by the volume (cm ^{3}).
Or, write out the formula triangle.
Write out the formula that you will need.
Substitute the given values for the mass and the density.
Make sure you give the correct units with your final answer.
The density is given in g/cm ^{3}, so the volume should be cm ^{3}.
Volume = 23.5 cm ^{3} (1 d.p.)