Question 121029
I APOLOGIZE FOR THE INCORRECT ANSWER.
IT SEEMS THAT A 10 BY 20 BY 10 RECTANGULAR PEN GIVES AN AREA OF 10*20=200 M^2 WHICH IS THE MAX AREA. I OVERLOOKED THE WORD RECTANGULAR BECAUSE A SQUARE IS A SPECIAL RECTANGLE.
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A SQUARE IS THE MAXIMUM AREA WITH A MINIMUM PERIMETER.
HOWEVER YOU ONLY NEED 3 SIDES OF FENCE.
THUS YOU NEED TO DIVIDE YOUR FENCING BY 3 TO GET THE SQUARE.
40/3=13.333 M IS THE LENGTH OF THE EACH SIDE.
THIS GIVES AN AREA OF:
13.333*13.333=177.769 M^2.