document.write( "Question 624573: My teacher just started doing this with me can someone help me out. \r
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\n" ); document.write( "\n" ); document.write( "A rectangle has an area of 240 {cm}^2 and a perimeter of 64 cm. What are its dimensions? Need to find the length and the with
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Algebra.Com's Answer #392856 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
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\n" ); document.write( "A rectangle has an area of 240 {cm}^2 and a perimeter of 64 cm. What are its dimensions
\n" ); document.write( " \"2%2Al+%2B+2%2Aw+=+64cm\"
\n" ); document.write( " \"l+%2B+w+=+32cm\" or \"l+=+32-w\"
\n" ); document.write( " A = length·width = 240cm^2
\n" ); document.write( " (32-w)w = 240
\n" ); document.write( " 32w - w^2 = 240
\n" ); document.write( " w^2 - 32w + 240 = 0
\n" ); document.write( " (w - 12)(w - 20) = 0
\n" ); document.write( " w is 12cm or 20cm. Dimensions of rectangle are 12cm by 20cm \n" ); document.write( "
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