2. Circumference
C = 2pr or pd

3. Find the circumference in terms of pi and to the nearest tenth

4. Portion of the circumference
Arc Length
Portion of the circumference A P B

5. Your Turn: Find the length of AB.( A
150o B
34 cm.

6. (
Ex 2: Find the m LM. Notice that we are given the arc length and need to find the measure of the arc!!
16.76 in. L
8 in. M C

7. (
Your Turn: Find the m AB.
18.84 in. B
9 in. A C

8. Ex 3: Find the circumference of circle C.
10.2 cm S
45o C

9. Your Turn: Find the radius of circle C. READ the directions carefully!!!
1.57 ft S
45o C

10. Your Turn: Find the circumference of circle C.A
200o C
41.87 cm B