document.write( "Question 393020: if i'm given one length of a rectangle and one diagonal of a rectangle how to i find the perimeter? \n" ); document.write( "
Algebra.Com's Answer #278971 by richard1234(7193)\"\" \"About 
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Suppose the length is L and the diagonal is D. By the Pythagorean theorem,\r
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\n" ); document.write( "\n" ); document.write( "\"D%5E2+=+L%5E2+%2B+W%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"W+=+sqrt%28D%5E2+-+L%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "Therefore, \"2L+%2B+2W+=+2L+%2B+2sqrt%28D%5E2+-+L%5E2%29\"
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