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December 9th, 2008, 01:47 AM  #1 
Newbie Joined: Dec 2008 Posts: 6 Thanks: 0  sector and segment of a circle
please help me in my problem pleaaaseeeee...tnx A sector of a circle is a region bounded by two radii and either the intercepted minor arc or the major arc. The area, A of a sector of a circle is in the same ratio to the area of the circle as the measure. theta, of the arc of the circle is to 360 degress Area of sector = theta (all over) or A = theta x pi x r^2 (Over) Area of Circle 360 degrees 360 deg. A segment of a circle is a region bounded by an arc of the circle and the chord of the arc. Show that in a circle of radius r the area of a segment with the central angle of theta is A= r^2 [ theta  sin theta] 2 [ 180 deg ] tnx..please give me a hint now.......tnx a bunch..i need it ASAP! =) 
December 9th, 2008, 08:44 AM  #2 
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: sector and segment of a circle
I don't answer questions ASAP since they have usually been left ALAP. However, ... The radii forming the sector and segment can be joined to form a triangle. Subtract the area of the triangle from the area of the sector to find the area of the segment. 
December 9th, 2008, 07:16 PM  #3 
Newbie Joined: Dec 2008 Posts: 6 Thanks: 0  Re: sector and segment of a circle
tnx a lot..anyway my student will be the one to answer that question.....i'm a tutor but i find hard to solve problems regarding geometry...tnx....

December 10th, 2008, 07:09 AM  #4  
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: sector and segment of a circle Quote:
 

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