document.write( "Question 828711: The lenght of a rectangle is twice it's width. If the area is 200 cm squared, find its perimeter \n" ); document.write( "
Algebra.Com's Answer #499458 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "x = 2y
\n" ); document.write( "xy = 200
\n" ); document.write( "---
\n" ); document.write( "2yy = 200
\n" ); document.write( "yy = 100
\n" ); document.write( "---
\n" ); document.write( "y = 10
\n" ); document.write( "x = 20
\n" ); document.write( "p = 2x + 2y
\n" ); document.write( "p = 2(x + y)
\n" ); document.write( "p = 2(30)
\n" ); document.write( "p = 60 cm
\n" ); document.write( "---
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