document.write( "Question 385908: The area of a rectangle is 50 and the perimeter is 32 Calculate the dimensions of the rectangle to 2 decimal places. I think a quadratic equation is needed.\r
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Algebra.Com's Answer #272906 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
l*w=50
\n" ); document.write( "l+w=32
\n" ); document.write( "...
\n" ); document.write( "l=50/w
\n" ); document.write( "..
\n" ); document.write( "substitute the value of l
\n" ); document.write( "50/w +w=32
\n" ); document.write( "(50+w^2)/w=32
\n" ); document.write( "..
\n" ); document.write( "multipy by w
\n" ); document.write( "50+w^2=32w
\n" ); document.write( "w^2-32w+50=0
\n" ); document.write( "use quadratic equation
\n" ); document.write( "a=1,b=-32,c=50
\n" ); document.write( "b^2-4ac= 824
\n" ); document.write( "...
\n" ); document.write( "\"x1=%2832%2Bsqrt%28824%29%29%2F2\"
\n" ); document.write( "x1=30.35
\n" ); document.write( "\"x2=%2832-sqrt%28824%29%29%2F2\"
\n" ); document.write( "..
\n" ); document.write( "x2=1.65
\n" ); document.write( "The dimensions are 30.35 by 1.65
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\n" ); document.write( "m.ananth@hotmail.ca
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