Answer: 32
Step-by-step explanation: looking at the length of the bigger rectangle, we can see that it is twice the length of the small one.
Mathematically meaning 12.4 = 2(6.2)
So in the real sense of it, we can conclude that the smaller rectangle was dilated to give the bigger.
So using that, we can see that the width of the larger triangle would be 1.8 * 2 = 3.6 feet
Mathematically, we can calculate the perimeter of a rectangle using the formula;
P =2 (l + b)
Thus P = 2(12.4 + 3.6) = 2(16) = 32 feet