Final answer:
The total length of fencing Dilek needs for both gardens is 16 feet.
Step-by-step explanation:
To find the total length of fencing Dilek needs for both gardens, we add the lengths of the two sides. For the first garden, the length is 8 feet, and for the second garden, the length is also 8 feet. Therefore, the total length of fencing Dilek needs for both gardens is 8 + 8 = 16 feet.