document.write( "Question 1131035: You have 312 feet of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area \n" ); document.write( "
Algebra.Com's Answer #747637 by ikleyn(52778)\"\" \"About 
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\n" ); document.write( "A rectangle of a given perimeter has a maximum area if and only if it is a square.\r
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\n" ); document.write( "\n" ); document.write( "For the proof,  see the lesson\r
\n" ); document.write( "\n" ); document.write( "    - A rectangle with a given perimeter which has the maximal area is a square\r
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document.write( "So, in your case a rectangle must be a square with the side length of  312/4 = 78 feet.      Answer\r\n" );
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