The area of a square field is 200 square feet. what is the approximate length of each side of the field? round your answer to the nearest foot.

You need to estimate the square root of 200 ft². Rewrite 200 as 2 x 100, then square root of (2*100) is:

10*sqrt(2). The sqrt(2) = 1.414, so the length of each side of the square will be 10*1.414 = 14.14 ft or about 14 ft.

That they are numbers and related to each other.