GCSE Maths - Area of a Sector and Length of an Arc of a Circle (Circles Part 3) (2026/27 exams)

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** WHAT'S COVERED **
1. Defining Sectors and Arcs.
Minor and major sectors explained.
Minor and major arcs explained.
2. Calculating the Area of a Sector.
Introducing the formula.
Understanding the formula as a fraction of the total circle area.
3. Calculating the Length of an Arc
Introducing the formula.
Understanding the formula as a fraction of the total circle circumference.
4. Applying the Formulas

** EXAM BOARD INFO **
This video is suitable for maths courses around the world.
KS3 - Not on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - All on your course

** CHAPTERS **
0:00 Intro: What are Sectors and Arcs?
0:39 Area of Sector & Arc Length Formulas
1:08 Understanding the Formulas (Fraction of a Circle)
2:10 Example 1: Calculating Area & Arc Length
2:44 Using Angle/360 for Any Sector
3:29 Example 2: Calculating Area & Arc Length
3:55 Exam Question Example

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