Geometry: An Interactive Journey to Mastery

 An arc of a circle has length^72 SDQGPHDVXUHƒ:KDWLVWKHUDGLXVRIWKHFLUFOH"

 A circle has radius 2. What do you notice about the area of a sector of that circle with central angle xƒDQG
the length of the arc on that sector?

 Find the areas of the shaded regions shown.
D௘ͽ
6
Figure 22.7

E௘ͽ 90°

radius = 1

Figure 22.8

F௘ͽ

30°

10

diameter

Figure 22.9

G௘ͽ

40°

90°

radius = 2

Figure 22.10

Problems