Question 214001
there are 2 corner tiles, and they each have 
3 sides which are on an outside edge
{{{2*3 = 6}}} sides
that leaves {{{8 - 2 = 6}}} tiles, each of which
has only 2 sides on an outside edge
{{{6*2 = 12}}} sides
There are {{{6 + 12 = 18}}} 3" sides on the outside
of the rectangle
{{{18*3 = 54}}}
There are 54 inches around the rectangle