x

Parts of a sector

Labelled sector with centre O, two radii marked r, central angle theta, arc length L and shaded sector area A

A sector is a slice of a circle made by two radii and an arc. If the angle at the centre is $θ\theta$ , then the sector is the fraction $θ360\frac{\theta}{360}$ of the whole circle.

Sector Areas and Arc Lengths Lesson

IGCSE
Maths
Sector Areas and Arc Lengths

Step-by-step lessons covering Edexcel IGCSE Maths Sector Areas and Arc Lengths for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons

x

Parts of a sector

Labelled sector with centre O, two radii marked r, central angle theta, arc length L and shaded sector area A

A sector is a slice of a circle made by two radii and an arc. If the angle at the centre is $θ\theta$ , then the sector is the fraction $θ360\frac{\theta}{360}$ of the whole circle.

Sector Areas and Arc Lengths Lesson

IGCSE
Maths
Sector Areas and Arc Lengths

Step-by-step lessons covering Edexcel IGCSE Maths Sector Areas and Arc Lengths for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.