<span>P=34</span> inches<span>
a= left side=6 inches</span>
b= top side
P=2a+2b<span>
<span>P=34=2*6+2b
34=12+2b
b=11</span></span>
the length of the top side is 11 inches
We are given that the shorter piece is x
From your description, the longer piece is 2x + 2
The total length is
x + 2x + 2 = 14
ie
3x + 2 = 14
3x = 12
x = 4
So the length of the shorter piece is 4 ft
Therefore the length of the longer piece must be
(14 - 4) ft = 10 ft
12 red marked to 12 blue markers is 144