# Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle

In this lesson, we will find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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 radius of the sector to three significant figures?

1/3

Q2.What is the diameter of the sector to three significant figures?

2/3

Q3.What is the radius of the sector to three significant figures?

3/3

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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 radius of the sector to three significant figures?

1/3

Q2.What is the diameter of the sector to three significant figures?

2/3

Q3.What is the radius of the sector to three 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.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle

Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle.

Q1.What is the arc length of the semi circle in terms of π ?

1/3

Q2.What is the arc length of the quarter circle to 3 significant figures?

2/3

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

3/3

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle

Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle.

Q1.What is the arc length of the semi circle in terms of π ?

1/3

Q2.What is the arc length of the quarter circle to 3 significant figures?

2/3

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

3/3

# Lesson summary: Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle

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## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Dance