1. Arcs, Sectors, Segments

2. Finding the length of Arcs Look back in your notebook and find the formula for arc length Look back in your notebook and find the formula for area of a sector Look back in your notebook and find the formula for segment area

3. Arc Length Example -- 1 D H T Find the length of arc DT 85 o 4.2

4. Sectors Example -- 1 D H T Find the area of the sector created by arc DT 85 o 4.2

5. Segment Example -- 1 D H T Find the area of the segment created by arc DT 85 o 4.2

6. Arc Length Example -- 2 D H T Find the length of arc DT 110 o 6

7. Sector Example -- 2 D H T Find the area of the sector created by arc DT 110 o 6

8. Sector Example -- 2 D H T Find the area of the segment created by arc DT 110 o 6

9. Segment Area Examples--3 D H Find the area of the segment 270 o 11 in R

10. Word Problems A circle has an arc length of 4.71. The central angle is 55 degrees, find the diameter.

11. Word Problems A circular plot with a 720 ft diameter is watered by a spray irrigation system. To the nearest square foot, what is the area that is watered as the sprinkler rotates through an angle of 50 o

12. Word Problems The diameter of the orange slice (shown) is 18 centimeters. If each of the orange’s 10 sections are congruent, find the (approximate) area covered by 4 sections.