finding the area and length of a shaded area of a circle?

[blue]

Hi,
I would REALLY appreciate it if someone could tell/show me how to find both of these (finding the area and length of a shaded area of a circle?)and maybe show me an example or two? Thank you sooo much!!!

 

[Denis]

We can't do much if you don't post a specific problem.

http://www.google.ca/search?hl=en&q=sha ... =&aq=f&oq=

 

[Aladdin]

There are many ways to find the area of a shaded part in a circle, so you have to show the problem so we can help you .