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This lesson covers the AQA Required Practical for determining the density of regular and irregular solids and liquids (AQA 8464, Required Practical 15). You must understand the methods, equipment, calculations and sources of error involved.
A regular solid has a simple geometric shape (cuboid, cylinder or sphere) whose volume can be calculated from measured dimensions.
An irregular solid (e.g. a stone or a key) does not have a simple shape, so you cannot calculate its volume from dimensions. Instead, use the displacement method.
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