document.write( "Question 990732: If a circle's area increases in the ratio 81:49, wthat ratio has the radius increased by? \n" ); document.write( "
Algebra.Com's Answer #610735 by Boreal(15235)\"\" \"About 
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Area is a function of the square of the radius.
\n" ); document.write( "The ratio of the radius has increased by 9:7, and the square of that (area) would be 81:49
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