1. 11.1 Circumference and ⁀ Length
Mrs. Vazquez
Geometry

2. g-c.2.5 ; g-gmd.1.1 Essential Question:
How do I find ⁀ lengths and other measures?
Objective:
Students will be able to find measurements of ⁀s and other ⊙ parts.

3. circumference c = πd d = diameter c = 2πr r = radius
Find the diameter of a ⊙ with a circumference of 17ft.
A car tire has diameter of 28in. How many revolutions does the tire make while traveling 500ft?

4. ⁀ length corollary
In a ⊙, the ratio of the length of a given ⁀ to the circumference is = to the ratio of the measure of the ⁀ to 360o.

5. The radii for ⁀s of the red & blue tracks are shown on the diagram
The radii for ⁀s of the red & blue tracks are shown on the diagram. Approximate the distance traveled for each track.

6. Find m⁀DC
Major ⁀AC = 270o & is 61.26cm. Find circumference of ⊙O.

7. ∡AOC = 150o
⁀CA = 10.5ft
Find the length of the radius.