Key term for Edexcel GCSE Biology, used in Human Immunity and Medicines.
The straight-line distance from the centre of a circle to its edge, which is exactly half of the diameter.
Radius appears in Edexcel GCSE Biology revision content for Health, Disease and Medicines, especially Human Immunity and Medicines and Calculating Cross-Sectional Areas.
Create a free account to access Edexcel GCSE Biology revision notes, track progress, and practise related key terms.
