Area of Circles

by RIS Mathematics Gr7

| 9 QuestionsEveryone should watch the following video to understand how to find the area of a circle. You're going to have to answer a question about the video... so make sure you actually watch it!

1

1

After watching the video above, briefly describe, in your own words, why the area formula of a circle is

2

1

Before we get into areas of compound shapes, we have to make sure that we know how to find the area of a circle. If you know how to do that, move on to the following lesson. If you'd like some help, click on the following video. See you on the other side!

Area of Circles

Not finished

Kinda finished

100% Finished and correct

3

1

Looking at the picture above, about how many lengths of r (the radius) would fit on the circumference of the circle. Round to the nearest whole number!

4

1

In your notebook, use a ruler and your compass to draw a circle with an area of 50.24 cm squared. Attach a screenshot of your perfectly circular circle below. (Include relevenat measurements such as radius and diameter in your drawing)

5

1

Using the picture above, find the area of the circle. Use 3.14 to represent pi. Round your answer to the nearest whole number.

6

1

If the perimeter of the square above is 24, what is the area of the circle? Round your answer the nearest tenth.

7

1

Answer the question above.

8

1

Find the area of the shaded region of the quarter of a circle above. Round your answer to the nearest hundredth.

9

1

Test your knowledge! Complete the challenge lesson below!

Area and Circumference Challenge

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Tried it! Beat it! Loved it! I'm done

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