document.write( "Question 810306: Line PR is a diagonal of rectangle PQRS. PQ is 28ft and PR is 35ft. Find the length of line QR. \n" ); document.write( "
Algebra.Com's Answer #488627 by tommyt3rd(5050)\"\" \"About 
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clearly triangel PQR is in the 3-4-5right triangle family so...\r
\n" ); document.write( "\n" ); document.write( "3 - 4 - 5
\n" ); document.write( "x - 28 - 35\r
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\n" ); document.write( "\n" ); document.write( "so x=21
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