document.write( "Question 240469: a farmer with 4000 meters of fencing wants to encloce a rectangular plot that borders on a river.
\n" ); document.write( "*if the farmer does not fence the side along the river, what is the largest area that can be enclosed?
\n" ); document.write( "*provide the area function used and graph it. Identify the maximum and interpret what it means. \n" ); document.write( "
Algebra.Com's Answer #176203 by checkley77(12844)\"\" \"About 
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THIS IS A SPECIAL CASE WHERE THE LENGTH IS TWICE THE WIDTH & THERE IS ONLY 1 LENGTH BUT 2 WIDTHS.
\n" ); document.write( "L=2W
\n" ); document.write( "2W+L=4,000
\n" ); document.write( "2W+2W=4,000
\n" ); document.write( "4W=4,000
\n" ); document.write( "W=4,000/4
\n" ); document.write( "W=1,000 ANS. FOR THE EACH OF THE WIDTHS.
\n" ); document.write( "L=2*1,000=2,000 ANS. FOR THE 1 LENGTH.
\n" ); document.write( "PROOF:
\n" ); document.write( "2*1,000+2,000=4,000
\n" ); document.write( "2,000+2,000=4,000
\n" ); document.write( "4,000=4,000
\n" ); document.write( "PROOF:
\n" ); document.write( "1,000*2,000=2,000,000 TOTAL AREA.
\n" ); document.write( "TEST:
\n" ); document.write( "ADD 2 TO THE LENGTH & SUBTRACT 1 FROM EACH OF THE SIDES.
\n" ); document.write( "2002*999=1.999,998
\n" ); document.write( "ADD 1 TO EACH OF THE WIDTHS & SUBTRACT 2 FROM THE LENGTH.
\n" ); document.write( "1998+1001=1,999,998
\n" ); document.write( " \n" ); document.write( "
\n" );