document.write( "Question 492750: Please help me solve this problem, One side of rectangle is 1 meter less than the length of the diagonal.If the area is 60 meter squared, what are its dimensions? \n" ); document.write( "
Algebra.Com's Answer #335191 by ankor@dixie-net.com(22740)\"\" \"About 
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One side of rectangle is 1 meter less than the length of the diagonal. If the area is 60 meter squared, what are its dimensions?
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\n" ); document.write( "Let L = the length of the rectangle
\n" ); document.write( "Let W = the width of the rectangle
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\n" ); document.write( "I says,\"the area is 60 meter squared,\", therefore:
\n" ); document.write( "L * W = 60
\n" ); document.write( "then
\n" ); document.write( "L = \"60%2FW\"
\n" ); document.write( ":
\n" ); document.write( "\"One side of rectangle is 1 meter less than the length of the diagonal\"
\n" ); document.write( "Diagonal = W + 1
\n" ); document.write( "Using pythag:
\n" ); document.write( "W + 1 = \"sqrt%28L%5E2+%2B+W%5E2%29\"
\n" ); document.write( "Replace L with 60/W
\n" ); document.write( "W + 1 = \"sqrt%28%2860%2FW%29%5E2%2B+W%5E2%29\"
\n" ); document.write( "Square both sides
\n" ); document.write( "(W+1)^2 = \"%2860%2FW%29%5E2\" + W^2
\n" ); document.write( "FOIL
\n" ); document.write( "W^2 + 2W + 2 = \"3600%2FW%5E2\" + W^2
\n" ); document.write( "W^2 - W^2 + 2W + 2 = \"3600%2FW%5E2\"
\n" ); document.write( "2W + 2 = \"3600%2FW%5E2\"
\n" ); document.write( "Multiply both sides by W^2
\n" ); document.write( "2W^3 + 2W^2 = 3600
\n" ); document.write( "2W^3 + 2W^2 - 3600 = 0
\n" ); document.write( "simplify, divide by 2
\n" ); document.write( "W^3 + W^2 - 1800 = 0
\n" ); document.write( ":
\n" ); document.write( "Plot this equation on your graphing calc, should look like this:
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-6%2C+15%2C+-1000%2C+2000%2C+x%5E3%2Bx%5E2-1800+%29+\"
\n" ); document.write( "you can see W ~ 11.8 meters is the width
\n" ); document.write( "and
\n" ); document.write( "L = \"60%2F11.8\"
\n" ); document.write( "L ~ 5.1 meters is the length
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\n" ); document.write( ":
\n" ); document.write( "See if that checks out by finding the diagonal
\n" ); document.write( "d = \"sqrt%2811.8%5E2+%2B+5.1%5E2%29\"
\n" ); document.write( "d = 12.85 which is about 1 inch longer than the width
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