Answer: 44 feet.
Explanation:
Let s be the side of square area .
Given : Titus wants to fence a square area of his yard for his dogs if you wants the area of the square to be a 121 square feet.
The area of square is given by :-

i.e.

Taking square root on both sides, we get

The perimeter of square is given by :-

i.e.

Hence, the perimeter of the square need to be 44 feet.