PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and...

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Transcript of PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and...

Page 1: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 2: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 3: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

b = 𝟐 𝝅 𝒓

𝟐= 𝝅 r

h = 𝒓 𝒓

𝒓

𝑨 = 𝝅 𝒓𝟐

8.5:

Page 4: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 5: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 6: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 7: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 8: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 9: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

Area of a Sector of a Circle:

Page 10: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

Find the Area of each sector

Page 11: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

A = 𝝅𝒓𝟐=𝝅(𝟔)𝟐= 36𝝅

Page 12: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

6.6: Around the World

The weight will rise approximately 7.85 cm

Page 13: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

Arc Length of smaller gear1 full rotation

Or 90°

Page 14: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

Maria and her friends are playing hoop rolling. Maria rolls alarge hoop along the ground. The hoop rotates through an

angle of 𝟓

𝟐𝝅 radians in 2 seconds. How many revolutions

does the hoop make in 4 minutes?

Hint: one revolution is one full rotation, 360°

Answer: 150 revolutions

Page 15: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

Your Turn:

From HW 6.5:

Page 16: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 17: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So
Page 18: PowerPoint Presentation...2016/02/01  · Area Formula for Circles The large pie is 78.5 in2, and the small pie is 50.2 in2. The difference in area is about 28.3 square inches. So

Homework:Workbook 8.5, 8.6 & 6.6


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