Circle Lesson

Circles

Welcome to your mathematics lesson.

Open Ended

What's one thing you know about circles? You can say anything.

Circle Song

https://youtu.be/9WGO7dAxjD8 (your teacher will type this link into the chat for you)

Fill in the Blank

 $\pi r^2$  sounds like ____ to me

Fill in the Blank

If I need a __________ I'll just use pi d

Now it is time for some practise questions

You will start with 120 seconds on each question and it will get progressively shorter.

Multiple Choice

What is the area of this circle?

• 201.06
• 50.27
• 123.12
• 94.43

Multiple Choice

What is the area of this circle?

• 62.59

• 113.1

• 19.81

• 28.27

Multiple Choice

What is the area of this circle?

• 6082.12

• 1520.53

• 1893.14

• 1292.92

Multiple Choice

What is the area of this circle?

• 1385.44

• 2142.12

• 5541.77

• 1289.12

Multiple Choice

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

Multiple Choice

Find the circumference of the the circular pool.

• 14ft

• 7ft

• 43.96ft

• 21.98ft

Poll

Which do you find easier? Circumference or area?

• Circumference

• Area

Well done for your work today!

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