document.write( "Question 458982: The perimeter of a rectangle with length, l and width, w is given by P = 2w + 2l. If the perimeter of a certain rectangle is 78 centimeters and the width is 12 centimeters, what is the length? Please show all of your work. \n" ); document.write( "
Algebra.Com's Answer #314819 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! The perimeter of a rectangle with length, l and width, w is given by P = 2w + 2l. If the perimeter of a certain rectangle is 78 centimeters and the width is 12 centimeters, what is the length? Please show all of your work. \n" ); document.write( ". \n" ); document.write( "The problem gives you: \n" ); document.write( "w = 12 cm \n" ); document.write( "P = 78 cm \n" ); document.write( ". \n" ); document.write( "plug into and solve for L: \n" ); document.write( "P = 2w + 2L \n" ); document.write( "78 = 2(12) + 2L \n" ); document.write( "78 = 24 + 2L \n" ); document.write( "54 = 2L \n" ); document.write( "27 cm = L (length) \n" ); document.write( " |