Question

What is the area of the shaded region of this circle?

http://i.imgur.com/x0wtH.png

Answer 1

Area(sector) - A(triangle)
Area(sector) = (1/2)pi*12^2
Area(triangle) = (1/2)12^2*sin(60)

Answer 2

oops... i gave you the area of the unshaded...

Answer 3

area of sector = 60/ 360 * pi r^2 = 1/6 * pi * 12^2
= 24pi
area of triangle = 1/2 * 12^2 sin 60 = 72 sin 60 = 36qrt3
so the area of white segment = 24pi - 36sqrt3

take this from area of the whole cicle gives you area of shaded part

= pi 12^2- 24pi - 36sqrt3
= 120pi - 36sqrt3 = 377 - 62.35 = 314.65

Answer 4

answer to question = Area(circle) - [answer from first post]
Area(circle) = pi*12^2

Answer 5

ummm yea..