can you please help me....

I am a 7th grade advanced math student, but I don't know how to find the ark of the circle. We arn't allowed to use protractors or anything on it. Also I need the ark lengths and also help finding out the area for the 3rd circle. I need the area for both parts. Can anyone give me a formula...

If you do a http://www.google.com search on "circle arcs",
you'll get lots of sites eagerly waiting to help you;
as example: http://www.mathwords.com/a/arc_circle.htm

too late

I got it this mornining while I was looking at it. Thanks anyways though.

cowwwcowww said:

I am a 7th grade advanced math student, but I don't know how to find the ark of the circle. We arn't allowed to use protractors or anything on it. Also I need the ark lengths and also help finding out the area for the 3rd circle. I need the area for both parts. Can anyone give me a formula...

Click to expand...

Sorry, I am as blind as a bat so I can't see what information you have been given.

However

length of arc/circumference of circle = angle at centre of sector/360 = area of sector/area of circle