document.write( "Question 260447: the sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96cm. What is the area of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #191836 by checkley77(12844)\"\" \"About 
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5N+7N=12N
\n" ); document.write( "2*5N+2*7N=96
\n" ); document.write( "10N+14N=96
\n" ); document.write( "24N=96
\n" ); document.write( "N=96/24
\n" ); document.write( "N=4 ANS. FOR THE MULTIPLIER
\n" ); document.write( "5*4=20 ANS. FOR ONE SIDE
\n" ); document.write( "7*4=28 ANS. FOR THE OTHER SIDE
\n" ); document.write( "PROOF
\n" ); document.write( "2*20+2*28=96
\n" ); document.write( "40+56=96
\n" ); document.write( "96=96
\n" ); document.write( "20*28=560 cm^2 is the area.
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