document.write( "Question 927123: what is the area between two concentric circles having diameters 10 and 18 meters respectively? \n" ); document.write( "
Algebra.Com's Answer #562689 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"+A%5B1%5D+=+pi%2Ar%5B1%5D%5E2+\"\r\n" );
document.write( "\"+A%5B2%5D+=+pi%2Ar%5B2%5D%5E2+\"\r\n" );
document.write( "--------------------\r\n" );
document.write( "\"+r%5B1%5D+=+%281%2F2%29%2Ad%5B1%5D+\"\r\n" );
document.write( "\"+r%5B1%5D+=+%281%2F2%29%2A18+\"\r\n" );
document.write( "\"+r%5B1%5D+=+9+\"\r\n" );
document.write( "-------------\r\n" );
document.write( "\"+r%5B2%5D+=+%281%2F2%29%2Ad%5B2%5D+\"\r\n" );
document.write( "\"+r%5B2%5D+=+%281%2F2%29%2A10+\"\r\n" );
document.write( "\"+r%5B2%5D+=+5+\"\r\n" );
document.write( "---------------\r\n" );
document.write( "\"+A%5B1%5D+=+pi%2A9%5E2+\"\r\n" );
document.write( "\"+A%5B1%5D+=+81%2Api+\"\r\n" );
document.write( "-----------------\r\n" );
document.write( "\"+A%5B2%5D+=+pi%2A5%5E2+\"\r\n" );
document.write( "\"+A%5B2%5D+=+25%2Api+\"\r\n" );
document.write( "------------------\r\n" );
document.write( "Area between the circles = \r\n" );
document.write( "\"+A%5B1%5D+-+A%5B2%5D+\"\r\n" );
document.write( "\"+81%2Api+-+25%2Api+=+56%2Api+\"\r\n" );
document.write( "\r\n" );
document.write( "josmiceli
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