Week 8: Pre-Algebra - Circumference and Area of Circles

Last updated about 2 years ago

9 questions

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Library

Week 8: Pre-Algebra - Circumference and Area of Circles

Last updated about 2 years ago

9 questions

Welcome Back!  Week 8: Pre-Algebra - Circumference and Area of Circles has two short video (and an optional Pi Song Video) and about 13 questions.

Be sure to attempt all the questions and submit when you are finished.   Please contact me through the comment feature or send an email to rshaw@fergflor if you have any questions.

What is Pi?

Anchor Charts

Circles: Circumference and Area Video Lesson

The Pi Song

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Draggable item		Corresponding Item

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What is the area if the diameter is 18 yards?

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How long did this lesson take you to complete today?

Welcome Back!  Week 8: Pre-Algebra - Circumference and Area of Circles has two short video (and an optional Pi Song Video) and about 13 questions.

Be sure to attempt all the questions and submit when you are finished.   Please contact me through the comment feature or send an email to rshaw@fergflor if you have any questions.

What is Pi?

Anchor Charts

Circles: Circumference and Area Video Lesson

The Pi Song

Match the parts of circles:

Draggable item		Corresponding Item
Diameter		The line from the center to the edge
Area		The line across the center of the circle
Radius		Around the outside of the circle
Circumference		The inside of the circle

What is the radius if the diameter is 8ft?

4ft

3ft

8ft

2ft

What is the radius if the diameter is 18 yards?

9yd

3yd

36yd

18yd

What is the diameter if the radius is 7 inches?

14 in

28 in

7 in

21 in

What is the diameter if the radius is 5 yards?

10yd

5yd

15yd

2.5yd

What is the area if the diameter is 18 yards?

What is the circumference of the circle? Leave your answer in terms of π. Use C = πd or C = 2πr.

4.5π meters

9π meters

18π meters

What is the area of the circle? Leave your answer in terms of π. Use A = πr2

How long did this lesson take you to complete today?

Match the parts of circles: 

Diameter

The line from the center to the edge 

Area

The line across the center of the circle 

Radius

Around the outside of the circle 

Circumference 

The inside of the circle

What is the radius if the diameter is 8ft? 

4ft

3ft

8ft

2ft

What is the radius if the diameter is 18 yards? 

9yd

3yd

36yd

18yd

What is the diameter if the radius is 7 inches?

14 in

28 in

7 in

21 in

What is the diameter if the radius is 5 yards?

10yd

5yd

15yd

2.5yd

What is the circumference of the circle?  Leave your answer in terms of π. Use C = πd or C = 2πr.

4.5π meters

9π meters

18π meters

What is the area of the circle?  Leave your answer in terms of π.  Use A = πr2 

5π centimeters2

10π centimeters2

20π centimeters2

100π centimeters2

400π centimeters2