document.write( "Question 864390: The length of a rectangle is twice the width. The perimeter is 84 cm more than the width. Make a diagram and find the rectangles dimension \n" ); document.write( "

Algebra.Com's Answer #520966 by josgarithmetic(39617) $\"\"$ $\"About$

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x for length
\n" ); document.write( "y for width\r
\n" ); document.write( "\n" ); document.write( "x=2y, and 2(x+y)=84.
\n" ); document.write( "Substitution gives $\"2%282y%2By%29=84\"$
\n" ); document.write( " $\"2%2A3y=84\"$
\n" ); document.write( " $\"6y=84\"$
\n" ); document.write( " $\"y=84%2F6\"$
\n" ); document.write( " $\"highlight%28y=14%29\"$
\n" ); document.write( "-
\n" ); document.write( " $\"highlight%28x=28%29\"$ \n" ); document.write( "

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