Answer:
[tex]\sqrt{(6w)^2+(10w)^2} [/tex]
Step-by-step explanation:
You need to use Pythagoras' theorem:
[tex]c=\sqrt{a^2+b^2} [/tex] where a and b are the sides of the field.
So the distance from one corner to the opposite corner = [tex]\sqrt{(6w)^2+(10w)^2} [/tex]
