If the car travels 942.5 ft during 10 rotations of the ride, that means that it travels 94.25 feet on one rotation. Since the distance that it travels during one rotation is equal to the circumference of the circle that is the ferris wheel, we can use the formula for the circumference of the circle to determine the diameter of the ferris wheel.
C = π X d
d = C / π = 94.25 / 3.1415927 = 30 ft
Since the car will be at its highest point when it is at the top of the circle, this means that the distance from the car at its highest point to the ground is also its diameter, so that is the solution.
