Question 765621
Consider a right angled triangle.
Base side = 5m
Vertical side = 12m
Hypotenuse = length of one wire.
5^2 + 12^2 = Hypotenuse^2
Hypotenuse = {{{sqrt(169)}}}
Hypotenuse = 13m
3 wires of 13m length = 39m
39m of wire is required.
Hope this helps.
:-)