document.write( "Question 1107007: “Three concentric circles have radii of a, 2a, and 3a. Find the area of the outer ring and the middle ring.” I think the outer area is A=pi(3a)^2 and the middle area is A=pi(2a)^2, but I’m not very sure. \n" ); document.write( "

Algebra.Com's Answer #722011 by ikleyn(52915) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "The area of the outer ring is the difference \r\n" );
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document.write( "    A =  -  =  = .\r\n" );
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document.write( "The area of the middle ring is the difference \r\n" );
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document.write( "    A =  -  =  = .\r\n" );
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