Final answer:
The length of each side of the square is closest to 4.7 feet.
Step-by-step explanation:
To find the length of each side of the square, we need to find the square root of the area. The area of the square is given as 22 square feet. Taking the square root of 22 gives us approximately 4.69. Therefore, the length of each side of the square is closest to 4.7 feet, which corresponds to option c.