Circle Formulae GCSE Maths
Circle formulae are important for GCSE Maths. You need to know which formula matches which type of question.
Formula Checklist
- Area of a circle
- Circumference of a circle
- Area of a sector
- Arc length
Exam tip: Area answers use square units, while circumference and arc length use length units.
Common mistake: Students often know the formula but use the wrong value for the radius.
Video explanation
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