document.write( "Question 286483: A rectangle is twice as long as it is wide. its perimeter is 48cm find its dimension. \n" ); document.write( "
Algebra.Com's Answer #207776 by texttutoring(324)![]() ![]() You can put this solution on YOUR website! Let l = length, w=width\r \n" ); document.write( "\n" ); document.write( "l=2w (because the length is twice as long as the width)\r \n" ); document.write( "\n" ); document.write( "The perimeter can be expressed by:\r \n" ); document.write( "\n" ); document.write( "P=2w+2l\r \n" ); document.write( "\n" ); document.write( "Substitute P=48 and l=2w into the equation:\r \n" ); document.write( "\n" ); document.write( "48 = 2w + 2(2w) \n" ); document.write( "48 = 2w + 4w \n" ); document.write( "48 = 6w \n" ); document.write( "w=8\r \n" ); document.write( "\n" ); document.write( "The width is 8cm and the length is 16cm. \n" ); document.write( " |