document.write( "Question 776883: A rectangular parcel of land is 50 ft. wide. The length of a diagonal between opposite corners is 10 ft more than the length of the parcel. What is the length of the parcel? \n" ); document.write( "
Algebra.Com's Answer #473774 by psbhowmick(878)\"\" \"About 
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Let the length be L ft and diagonal be D ft.\r
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\n" ); document.write( "\n" ); document.write( "Using Pythagoras theorem
\n" ); document.write( "\"Diagonal%5E2+=+Length%5E2+%2B+Width%5E2\"
\n" ); document.write( "\"D%5E2+=+L%5E2+%2B+50%5E2\" _______ (1)\r
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\n" ); document.write( "\n" ); document.write( "Also, \"D+=+L+%2B+10\"\r
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\n" ); document.write( "\n" ); document.write( "Substituting for D in terms of L in (1)
\n" ); document.write( "\"%28L+%2B+10%29%5E2+=+L%5E2+%2B+50%5E2\"
\n" ); document.write( "\"L%5E2+%2B+20L+%2B+100+=+L%5E2+%2B+2500\"
\n" ); document.write( "\"20L+=+2400\"
\n" ); document.write( "\"L+=+2400%2F20+=+120\"\r
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\n" ); document.write( "\n" ); document.write( "The length is 120 ft.
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