>I'm trying to use Maxima with the following equation for the area of
>the circle-circle intersection, to solve for the radius R of two
>circles with equal radius, when the following is known:
>
>the distance d between the centers of the circles is 45.9 feet
>the area of the circle-circle intersection is 15% of the area of
>either circle (i.e. Area Intersection = 0.15(pi)R^2
>
>Using Maple 11, I get the output shown at
>http://upload.imgspot.com/u/07/321/15/maple.jpg
This appears to be the correct answer for R.
>However, when I try to use Maxima to solve this, I cannot get beyond
>the point shown in (%o40) at
http://upload.imgspot.com/u/07/321/15/maxima.jpg
>Can anyone give me an idea of what I might not be doing correctly
>with Maxima? I have tried simplifying and everything else I can
>think of, but cannot get Maxima to solve beyond this point.
>
>Thank you,
>Tony