document.write( "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 \n" ); document.write( "

Algebra.Com's Answer #597737 by Edwin McCravy(20056) $\"\"$ $\"About$

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document.write( "The formula for this problem is derived on this website:\r\n" );
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document.write( "analyzemath.com/Geometry/challenge/three_circles_problem.html\r\n" );
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document.write( "It is:\r\n" );
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document.write( "where c = the small circle's radius, and a and b are the radii of the \r\n" );
document.write( "other two circles, in this case 25 and 9.\r\n" );
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document.write( "Edwin

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