document.write( "Question 71238: John has 300 feet of lumber to frame a rectangular patio (the perimeter of a rectangle is 2 times length plus 2 times width). He wants to maximize the area of his patio (area of a rectangle is length times width). What should the dimensions of the patio be, and show how the maximum area of the patio is calculated from the algebraic equation. \r
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document.write( "Show clearly the algebraic steps which prove your dimensions are the maximum area which can be obtained. Use the vertex formula to find the maximum area.
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Algebra.Com's Answer #50966 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! THE MAXIMUM AREA OF ANY RECTANGLE IS A SQUARE. THUS: \n" ); document.write( "2X+2X=300 \n" ); document.write( "4X=300 \n" ); document.write( "X=300/4 \n" ); document.write( "X=75 FEET PER SIDE. \n" ); document.write( "THIS ASSUMES THE PATIO IS A STAND-ALONE STRUCTURE. \n" ); document.write( "IF IT IS ATTACHED TO A HOUSE THEN THERE ARE ONLY THREE SIDES THAT NEEDS TO BE ENCLOSED. THUS THE SOLUTION HERE IS \n" ); document.write( "3X=300 \n" ); document.write( "X=300/3 \n" ); document.write( "X=100 FEET ON A SIDE. \n" ); document.write( " |