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 \n" );
document.write( "
Algebra.Com's Answer #579172 by macston(5194)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |