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Answer:
Step-by-step explanation:
The number of square units required to fill a square is the area.
Area of a square = side × side
Area of a square = side2 square units
Area of a square field = 479 ft2 [Given]
So the side can be determined by:
Length of a side of the field = √479 = 21.9 feet
Therefore, the length of a side of the field is 21.9 feet.