document.write( "Question 121509: Old MacDonald wants to build a rectangular pen for his animals. He has 40m of fencing and he plans to use the barn as one side for his pen. What dimensions will give the maximum area? \n" ); document.write( "
Algebra.Com's Answer #89149 by checkley71(8403)\"\" \"About 
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10x20x10=10*20=200 ft^2 is the maximum area.
\n" ); document.write( "try 9x22x9=198
\n" ); document.write( "try 11x18x11=198
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