document.write( "Question 809047: A rectangle is 3 times as long as it is wide, and its perimeter is 80 cm. Find its dimensions. \n" ); document.write( "

Algebra.Com's Answer #487381 by Cromlix(4381) $\"\"$ $\"About$

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Width = x
\n" ); document.write( "Length = 3x
\n" ); document.write( "Perimeter = 2*length + 2*width
\n" ); document.write( "80cm = 2(3x) + 2(x)
\n" ); document.write( "80 cm = 6x + 2x
\n" ); document.write( "8x = 80cm
\n" ); document.write( "x = 10cm
\n" ); document.write( "Width = 10cm
\n" ); document.write( "Length = 30cm
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-) \n" ); document.write( "

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