Answer:
width = 14.14 sq.miles
Explanation:
We are told that the city is square.. We are also told that the area of the city is 200 sq.miles.
Now,formula for area of square if a side is x is given as;
A = x²
Where x is both the length and width.
Thus;
x² = 200
x = √200
x = 14.14 sq.miles
Thus,length = 14.14 sq.miles and width = 14.14 sq.miles