A cable of 80m (meters) is hanging from the top of two poles that are both 50m from the ground.
What is the distance between the two poles, to one decimal place, if the center of the cable is 10m above the ground?
The poles are 0m apart.
If the cable is 80m, then half of it is 40m. The only time where the cable would drop 40m to the ground is when the poles are 0m apart.