MathematicsGeometryAges 12–14
Circles: Circumference & Area
Calculate the circumference and area of circles using the formulae C = πd (or 2πr) and A = πr², and solve problems involving perimeters and areas of composite shapes that include circular parts
Learning resources
Reviewed external links that reinforce this concept. They do not replace Gakuva’s teaching approach.
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The teaching approach above still stands. Curated practice links will appear here as the shelf fills.
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Circles: Circumference & AreaProcedural concept
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Check understanding
- Calculate the circumference and area of a circle given its radius or diameter
- Find the perimeter or area of a composite shape made from rectangles and semicircles
- Explain the relationship between π, diameter, and circumference informally
“If your child wants to know how far a bicycle wheel travels in one full rotation, can they use the diameter of the wheel and π (pi) to work out the circumference?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Geometry
- Age range
- Ages 12–14
Standards
ccss-math:7.G.4uk-nc-2013:KS3.Maths.Geo.2