# Use the arc length to find the radius or angle of a sector

In this lesson, we will use the arc length to find the radius or angle of the sector

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the arc length of the sector to 3 significant figures?

1/3

Q2.What is the perimeter of the sector to 3 significant figures?

2/3

Q3.What is the arc length of the sector to 3 significant figures?

3/3

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the arc length of the sector to 3 significant figures?

1/3

Q2.What is the perimeter of the sector to 3 significant figures?

2/3

Q3.What is the arc length of the sector to 3 significant figures?

3/3

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Use the arc length to find the radius or angle of the sector

Use the arc length to find the radius or angle of a sector

Q1.What is the radius to 3 significant figures?

1/3

Q2.What is the radius to 3 significant figures?

2/3

Q3.What is the angle of this sector to the nearest degree?

3/3

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Use the arc length to find the radius or angle of the sector

Use the arc length to find the radius or angle of a sector

Q1.What is the radius to 3 significant figures?

1/3

Q2.What is the radius to 3 significant figures?

2/3

Q3.What is the angle of this sector to the nearest degree?

3/3

# Lesson summary: Use the arc length to find the radius or angle of a sector

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga