March 2016 Puzzle

 filled six point star centered over a circle
The six-pointed star shown to the right has points formed from equilateral triangles with sides of length 1 inch. The star is placed on a circular region sharing the same center. Given that the area of the part of the star lying outside of the circle is the same as the area of the part of the circular region lying outside of the star, determine the radius of the circle. Note: the circle shown in the figured does not necessarily satisfy the given conditions.
 
 
 
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