1. Logic puzzle Lessons 39 and 40 worktime
Agenda
Logic puzzle
Lessons 39 and 40
worktime

2. Lesson 39: circumference of a circle
Bonus Pi Video!!! Pi (π ):

3. Circumference of a circle
C = πd or C = 2πr π ≈ 3.14 π ≈ 𝟐𝟐 𝟕

4. The radius of a car wheel is 7 inches
The radius of a car wheel is 7 inches. About how far does the wheel roll in one turn? (use 𝟐𝟐 𝟕 for π)

5. Lesson 40: area of a circle

6. A circular table in the library has a diameter of 8 feet
A circular table in the library has a diameter of 8 feet. If 6 students sit around the table, then each student has about how many square feet of work area?

7. Sector: a portion of the interior of a circle

8. Find the area of the sector. Express in terms of π