Question 661085
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/d/da/PerimeterRectangle.svg/200px-PerimeterRectangle.svg.png">
perimeter of a rectangular dog pen 72 ft. The width of the pen is 12 ft
 2L + 2W = 72
0r
  L + W = 36
  L + 12 = 36
     L = 24
{{{A = 24*12 = 288}}}