Two circles with same radius intersect, so that the outermost point of either circle goes through the other's center. Arc [tex]SPX[/tex] has length [tex](3/4)*\pi[/tex] (see attached image.)(adsbygoogle = window.adsbygoogle || []).push({});

What is the radius of either circle?

I think I could solve this problem if I knew the central angle SX, but I don't know how to identify when they hit (X). Maybe I have to form some special triangle into the image.

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# Homework Help: Two cicles intersect

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