Answer:
Step-by-step explanation:
January 15, 2012 4:31PM
I assume you want the area of the sector with angle 120o and radius 9 cm:
120o is 120/360 = 1/3 of a full circle.⇒ area of sector is 1/3 area of full circle
⇒ area_of_sector = 1/3 x π x radius2 = 1/3 x π x (9 cm)2
= 27π cm2
≈ 84.82 cm2
