# Unit 9 Section 1 : Area

The easiest method to find an area of a shape, particularly if it is a simple shape made up of straight lines, is to count the squares inside it.

## Example Question 1

Look at the shapes below:
 Practice Questions Work out the area (in square units) of each of the shapes on the left then click on the button marked to see whether you are correct. (a) (b)

## Example Question 2

Look at the curved shape below.

 Estimate the area of the shape. Some of the squares have been numbered to help you. There are 4 complete squares (labelled 1, 2, 3 and 4). Regions 5 and 6 together make up about 1½ squares, as do regions 7 and 8. So we have another 3 squares giving a total of 7 square units (plus a little bit more!). We often have to use this type of estimation when working with curved shapes.

## Exercises

Work out the answers to the questions below and fill in the boxes. Click on the button to find out whether you have answered correctly. If you are right then will appear and you should move on to the next question. If appears then your answer is wrong. Click on to clear your original answer and have another go. If you can't work out the right answer then click on to see the answer.

Question 1
Look at the circle below. Count squares to estimate its area.
 What is the area of the circle? The computer will allow a small amount of error. square units

Question 2
Find the areas of these shapes by counting squares.

 (a) square units (b) square units (c) square units (d) square units

You have now completed Unit 9 Section 1
 Your overall score for this section is Correct Answers You answered questions correctly out of the questions in this section. Incorrect Answers There were questions where you used the Tell Me button. There were questions with wrong answers. There were questions you didn't attempt.
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