Various formulae are used to calculate perimeter, area or volume. The order of rotational symmetry is how many times a shape fits into its original shape during a rotation of 360 degrees.
This video shows the history of area and volume and explains early calculations.
Sanjeev Kohli needs to put items into storage and so needs to calculate the volume. Together with a removal expert, Gavin Deanville, he measures several items and calculates the volume of each.
To decorate his friend’s bathroom, Sanjeev Kohli enlists the help of a professional tiler, Steven Lang. They work out how many tiles and how much paint they need before carrying out the job.
