document.write( "Question 948861: The length of a rectangle is twice it's width. The perimeter is 54cm
\n" ); document.write( "Find the length
\n" ); document.write( "Find the width
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Algebra.Com's Answer #579172 by macston(5194)\"\" \"About 
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W=width; L=length=2W Perimeter=P=2(L+W)
\n" ); document.write( "54 cm=2(L+W) Substitute for L
\n" ); document.write( "54 cm=2(2W+W)
\n" ); document.write( "54 cm=2(3W)
\n" ); document.write( "54 cm=6W Divide each side by 6.
\n" ); document.write( "9 cm=W ANSWER 1: Width is 9 cm.
\n" ); document.write( "L=2W=2(9 cm)=18 cm ANSWER 2: Length is 18 cm.
\n" ); document.write( "CHECK:
\n" ); document.write( "P=2(L+W)
\n" ); document.write( "54 cm=2(18 cm + 9 cm)
\n" ); document.write( "54 cm= 2(27 cm)
\n" ); document.write( "54 cm=54 cm\r
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