document.write( "Question 739855: please help. the diagional of a rectangle measures 20cm. the width of the rectangel is 12 cm. find the length of the rectangle \n" ); document.write( "

Algebra.Com's Answer #451356 by jim_thompson5910(35256) $\"\"$ $\"About$

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$\"a%5E2+%2B+b%5E2+=+c%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"L%5E2+%2B+W%5E2+=+%28hypotenuse%29%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2+%2B+12%5E2+=+20%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2+%2B+144+=+400\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2+=+256\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x+=+sqrt%28256%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x+=+16\"$ \r
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\n" ); document.write( "\n" ); document.write( "So the length is 16 cm\r
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