document.write( "Question 824972: Make R the subject of the formula
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Algebra.Com's Answer #496897 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"A=pi+%28%28R-r%29%2F2%29%5E2+\"\r
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\n" ); document.write( "\n" ); document.write( "\"A%2Fpi+=+%28%28R-r%29%2F2%29%5E2+\"\r
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\n" ); document.write( "\n" ); document.write( "\"sqrt%28A%2Fpi%29+=+%28R-r%29%2F2+\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28R-r%29%2F2+=+sqrt%28A%2Fpi%29+\"\r
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\n" ); document.write( "\n" ); document.write( "\"R-r+=+2%2Asqrt%28A%2Fpi%29+\"\r
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\n" ); document.write( "\n" ); document.write( "\"R+=+r+%2B+2%2Asqrt%28A%2Fpi%29+\"
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