The football field is 60 yards by 100 yards.Is the length of the diagonal across this field more or less than 200 yards?

2 answers

less.

length=sqrt(60^2+100^2)
Use the Pythagorean theorem since the diagonal is the hypotenuse of a right triangle.

a^2 + b^2 = c^2
60^2 + 100^2 = c^2

Take it from there.