1. Unit 4: Circles and Volume
Circle Vocabulary

2. Daily Agenda

3. Daily Agenda

4. Daily Agenda

5. Daily Agenda

6. Unit 4: Circles and Volume
4.1 Circumference and Arc Length of a Circle

7. Daily Agenda
degrees
radians
360˚ 2π

8. Daily Agenda Converting between Degrees and Radians 𝝅 𝟗 𝟓𝝅 𝟔 𝝅 𝟒 𝟐𝟕𝟎°
𝟐𝟎× 𝝅 𝟏𝟖𝟎 =
𝟏𝟓𝟎× 𝝅 𝟏𝟖𝟎 =
𝝅 𝟗
𝟓𝝅 𝟔
𝟒𝟓× 𝝅 𝟏𝟖𝟎 =
𝝅 𝟒
𝟑𝝅 𝟐 × 𝟏𝟖𝟎 𝝅 =
𝟓𝝅 𝟑 × 𝟏𝟖𝟎 𝝅 =
𝟐𝟕𝟎°
𝟑𝟎𝟎°
𝝅 𝟏𝟐 × 𝟏𝟖𝟎 𝝅 =
𝟏𝟓°

9. Daily Agenda perimeter circumference diameter radius double ratio π
𝟐𝟐 𝟕
3.14

10. Daily Agenda
𝟐𝝅 𝟏𝟐 =
𝟐𝝅 𝟗 =
𝟐𝟒𝝅
𝟏𝟖𝝅
𝟐𝝅 𝟏𝟕.𝟓 =
𝟑𝟓𝝅
𝟐𝝅 𝟐.𝟖 =
5.6𝝅

11. Daily Agenda
degrees
angle measure
circumference
Arc length

12. Daily Agenda 𝟕𝟕𝝅 𝟒 𝟏𝟑𝝅 𝟔 𝟗𝟓𝝅 𝟔 𝟑𝟗𝝅 𝟒 𝟐𝝅(𝟏𝟏)× 𝟑𝟏𝟓 𝟑𝟔𝟎 = 𝟏𝟑× 𝝅 𝟔 =
𝟏𝟑× 𝟑𝝅 𝟒 =
𝟐𝝅(𝟏𝟗)× 𝟏𝟓𝟎 𝟑𝟔𝟎 =
𝟗𝟓𝝅 𝟔
𝟑𝟗𝝅 𝟒