# Find the circumference of a circle

In this lesson, we will investigate how to calculate the circumference of a circle. We will explore the formula used for this calculation, and practise finding the circumference from a given radius or diameter.

#### 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.Find the perimeter of the compound shape.

1/3

Q2.Find the perimeter of the compound shape.

2/3

Q3.Find the perimeter of the compound shape.

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.Find the perimeter of the compound shape.

1/3

Q2.Find the perimeter of the compound shape.

2/3

Q3.Find the perimeter of the compound shape.

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:

# Find the Circumference of a Circle

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Find the length of the circumference in terms of pi.

1/4

Q2.Find the length of the circumference to three significant figures.

2/4

Q3.Find the length of the circumference in terms of pi.

3/4

Q4.Find the length of the circumference to 3 significant figures.

4/4

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

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

# Find the Circumference of a Circle

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Find the length of the circumference in terms of pi.

1/4

Q2.Find the length of the circumference to three significant figures.

2/4

Q3.Find the length of the circumference in terms of pi.

3/4

Q4.Find the length of the circumference to 3 significant figures.

4/4

# Lesson summary: Find the circumference of a circle

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Dance