Let's find the perimeter of the yard first (amount that needs to be fenced):
72 + 102 + 72 + 102 = 348 ft.
Now we can find the amount of fencing sections needed
348 ft. ÷ 8 ft. sections = 43.5 sections
The answer is 43.5 sections (may need to round up to 44 sections if the sections need to be whole)