If the radii of the inner circles are [math]m[/math] and [math]n[/math], can you find the radius of the larger circles?[br][br]Study the following example. Vary the radii of the inner circles.
What is the radius of the larger circle in terms of [math]m[/math] and [math]n[/math] ?
[math]m+\frac{2mn}{m-n}[/math]