Posted by **Knights** on Wednesday, December 5, 2012 at 7:25am.

Please help guys if you can, this is a really hard problem I am trying to solve

Four circles of unit radius are drawn with centers (1,0),(0,1) ,(-1,0) ,(0,-1) and . A circle with radius 2 is drawn with the origin as its center. What is the area of all points which are contained in an odd number of these 5 circles? (Express your answer in the form "a pi + b" or "a pi - b", where a and b are integers.)

- I am really struggling on this problem - geometry -
**Mac**, Wednesday, December 5, 2012 at 7:33am
Not sure what you are asking for

There is only one point (0,0) that contains all 5 circles

- I am really struggling on this problem - geometry -
**Steve**, Wednesday, December 5, 2012 at 11:27am
I worked this out a while back:

http://www.jiskha.com/display.cgi?id=1353876528

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