Measurement

Essential Mathematics Year 9

Lesson notes

Chapters

Introduction

Lea

Recap of past learning

The parts of a circle

Finding the circumference of a circle

Example: Finding the circumference of a circle

Finding the arc length of a circle

Example: Finding the arc length of a circle

Using arc length to find the perimeter of a sector

Exact and Decimal: Is there much more working out needed?

More examples

Summary

Description

This video continues the Year 9 series on Using Units of Measurement looking at the Circumference and Perimeter of a sector. Building on the work covered in a previous video (and content from the previous years), I look at how to find the circumference of a whole circle, the arc length of a circle and how to use the information to then go on and find the perimeter of a sector. There are lots of worked examples all explained clearly with theory. There is even some humour thrown in at times too. I pride myself on the easy to understand way I present my videos and would love to hear your feedback!

Video tags

maths tutorials
year 9 maths
grade 9 maths
using units of measurement
measurement and geometry
measurement
geometry
circumference of a circle
perimeter of a sector
circumference and perimeter of a sector
how to find the perimeter of a sector
arc length
how to find arc length