document.write( "Question 26116: The problem is:
\n" ); document.write( " The top of the John Hancock Building in Chicago is a rectagle whose lenth is 60 ft more than the width. The perimeter is 520 ft. Find the width and the length of the rectangle. Find the area of the rectangle.
\n" ); document.write( "At first, I though i had the answer, but i didn't look to see that the perimeter was 520 ft. so i just got lost and didn't know where to start anymore. so far, i got: let x =width ; let x=60 = length
\n" ); document.write( " x+(x+60) = 520 ft \r
\n" ); document.write( "\n" ); document.write( "but when i worked it out, it didn't seem right. please help! =)
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Algebra.Com's Answer #14038 by mathrebel(25)\"\" \"About 
You can put this solution on YOUR website!
Your reasoning is correct, but your formula is not. The perimeter of a rectangle is is 2*(l+w), so the correct formula is:\r
\n" ); document.write( "\n" ); document.write( "2*(x+(x+60))=520
\n" ); document.write( "2*(2x+60)=520
\n" ); document.write( "divide by 2;
\n" ); document.write( "(2x+60)=260
\n" ); document.write( "subtract 60,
\n" ); document.write( "2x=200
\n" ); document.write( "divide by two,
\n" ); document.write( "x=100=width
\n" ); document.write( "length is 60+x=160
\n" ); document.write( "The area is l*w=100*160=16000
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