document.write( "Question 1073768: the length of a rectangle is 40 cm longer than its breadth.if the area of the rectangle is 1200 cm2, calculate the length of the rectangle.
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Algebra.Com's Answer #688561 by jorel1380(3719) $\"\"$ $\"About$

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Let n be the width of the rectangle. Then its length is n+40. So:
\n" ); document.write( "n(n+40)=1200
\n" ); document.write( "n²+40n-1200=0
\n" ); document.write( "(n+60)(n-20)=0
\n" ); document.write( "n=-60 or 20
\n" ); document.write( "The width of the rectangle is 20 cm.; its length is 60 cm. ☺☺☺☺ \n" ); document.write( "

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