Solve. a soccer field is 120 yards long and 80 yards wide. what is the length of the diagonal of the field?

Using the Pythagorean theorem, the diagonal would be the hypotenuse of a triangle.

a^2 + b^2 = c^2

120^2 + 80^2 = c^2

14400 + 6400 = c^2

20,800 = c^2

c = SQRT (20800)

c = 40 sqrt (13), This is the exact answer.

c = 144.22 yards, This is if you need it in yards (May need to round off how the teacher wants it)

You do not say how the answer is to be written, so I have given you two ways.