Maths
Stretch Independent – Circumference & Area of Circles
Stretch (independent-school 11+): calculate the circumference and area of a circle using π ≈ 3.14.
MathsAge 11+25 minutes
What this topic covers
- Use C = πd (or 2πr) with π ≈ 3.14 or π ≈ 3.
- Use A = πr² and distinguish it from circumference.
- Solve problems with semicircles and quarter circles.
Core concept summaries
Key ConceptsCircumference: π × DiameterArea: π × Radius²Semicircles and the Two Traps
Practice formats pupils may meet
NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.
clozematchingquiz