The following video shows the cubes stacking concept for working out the formula for Rectangular Prism volume This means that we can use the mathematical formula of V = L x W x H, (rather than drawing and counting cubes), to work out the volume of any Rectangular Prism. Or the Area of the bottom layer multiplied by how many stacks high the prism is. Using some simple 3D box shapes, we can investigate Volume relationships as shown in the following examples:įrom our investigation, we can see that the volume of a 3D box shape, (called a “Rectangular Prism”), is always the LENGTH x WIDTH x HEIGHT Image Copyright 2013 by Passy’s World of Mathematics In mathematics we call the 3D shape a “Prism”.Ī 1cm cube is about the same size as a sugar cube. The Volume of a 3D Shape is the number of cubes needed to fill the inside of the shape. Water authorities in cities need to make sure that there is an adequate volume of water held in dams and reservoirs. People designing and building cars need to make sure there is enough volume inside the car for occupants and their belongings to be transported comfortably and safely, as well as ensuring the volume is correct for air bags to deploy effectively during accidents. Hairdressers need to mix chemicals together in the correct volumes when making hair treatments.īakers and Chefs need to measure out volumes of ingredients accurately, and know how to scale these amounts up and down for making different quantities of product. Heating and Cooling Technicians need to calculate volumes of buildings to work out what types of systems to install. Medical Personnel need to administer blood and drugs in specific volumes to patients using cylindrical injection containers and intravenous drips.Ĭoncreters need to calculate correct volumes of material required, because concrete is expensive, and it is hard to dispose of any extra left over material. Many jobs require a good knowledge and understanding of Volume.
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