63. Group Activity Designing a Suspension
Bridge The main cables of a suspension bridge uniformly distribute the weight of the bridge when in the form of a parabola. The main cables of a particular bridge are attached to towers that are 600 ft apart. The cables are attached to the towers at a height of 110 ft above the roadway and are 10 ft above the roadway at their lowest points. If vertical support cables are at $50-
\mathrm{ft}$ intervals along the level roadway, what are the lengths of these vertical cables?
