document.write( "Question 1017764: What is the radius of the ring? http://imgur.com/KFvBxpl \n" ); document.write( "
Algebra.Com's Answer #634030 by FrankM(1040)\"\" \"About 
You can put this solution on YOUR website!
The question -\r
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\n" ); document.write( "\n" ); document.write( "This is the equation of a circle X^2+Y^2=R^2\r
\n" ); document.write( "\n" ); document.write( "here, R = 18
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