document.write( "Question 126676: The areas of two circles are in the ratio 25:64. Find the ratio of their radii.
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Algebra.Com's Answer #92813 by solver91311(24713)\"\" \"About 
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\"A%5B1%5D=pi%2Ar%5B1%5D%5E2\" and \"A%5B2%5D=pi%2Ar%5B2%5D%5E2\". But we are given that \"A%5B1%5D%2FA%5B2%5D=25%2F64\", so we can say:\r
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\n" ); document.write( "\n" ); document.write( "\"%28pi%2Ar%5B1%5D%5E2%29%2F%28pi%2Ar%5B2%5D%5E2%29=25%2F64\"\r
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\n" ); document.write( "\n" ); document.write( "\"pi%2Fpi=1\" so\r
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\n" ); document.write( "\n" ); document.write( "\"%28r%5B1%5D%5E2%29%2F%28r%5B2%5D%5E2%29=25%2F64\"\r
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\n" ); document.write( "\n" ); document.write( "Take the square root of both sides:
\n" ); document.write( "\"sqrt%28%28r%5B1%5D%5E2%29%2F%28r%5B2%5D%5E2%29%29=sqrt%2825%2F64%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"r%5B1%5D%2Fr%5B2%5D=5%2F16\"\r
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\n" ); document.write( "\n" ); document.write( "Which is the required ratio.
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