# Calculate the area of non-rectilinear shapes

In this lesson, we will estimate the area of shapes that are not rectangles and are presented on a grid. Then we will use a mixture of calculating the area of rectangles and counting the additional parts to estimate the total area.

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!

## Question 4

Q1.Choose a formula that could be used to calculate the area of a rectangle.

1/4

Q2.Choose a formula that could be used to calculate the area of a square.

2/4

Q3.Choose a formula that could be used to calculate the perimeter of a rectangle.

3/4

Q4.Choose a formula to calculate the perimeter of a regular hexagon.

4/4

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!

## Question 4

Q1.Choose a formula that could be used to calculate the area of a rectangle.

1/4

Q2.Choose a formula that could be used to calculate the area of a square.

2/4

Q3.Choose a formula that could be used to calculate the perimeter of a rectangle.

3/4

Q4.Choose a formula to calculate the perimeter of a regular hexagon.

4/4

# 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.

Quiz:

# Calculate the area of non-rectilinear shapes

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

## Question 6

Q1.What is the area of the shape below?

1/6

Q2.What is the perimeter of the shape below?

2/6

Q3.What is the perimeter of the shape below?

3/6

Q4.What is the area of the shape below?

4/6

Q5.What is the area of the shape below?

5/6

Q6.What is the perimeter of the shape below?

6/6

Quiz:

# Calculate the area of non-rectilinear shapes

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

## Question 6

Q1.What is the area of the shape below?

1/6

Q2.What is the perimeter of the shape below?

2/6

Q3.What is the perimeter of the shape below?

3/6

Q4.What is the area of the shape below?

4/6

Q5.What is the area of the shape below?

5/6

Q6.What is the perimeter of the shape below?

6/6

# Lesson summary: Calculate the area of non-rectilinear shapes

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