Question 707477
Such a triangle is impossible.  You described a figure that has sides 8 yards, 2 yards, and 1.2 yards.  A requirement for a set of lengths to form a triangle is that the sum of the two shorter sides must be greater than the length of the longest side.  

Your triangle then requires that 1.2+2>8, or 3.2>8, which is false.  You therefore do not have a triangle and the figure has no perimeter.