SOLUTION: Two circles touch externally with their radius being 25 and 9 cm. A common tangent is drawn.another circle touching both the circles and the tangent is drawn.what is the radius of

Question 975649: Two circles touch externally with their radius being 25 and 9 cm. A common tangent is drawn.another circle touching both the circles and the tangent is drawn.what is the radius of that small circle
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!

The formula for this problem is derived on this website:

analyzemath.com/Geometry/challenge/three_circles_problem.html

It is:



where c = the small circle's radius, and a and b are the radii of the 
other two circles, in this case 25 and 9.



Edwin

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