Answer:
ferris wheel travel approx = 434.72 ft 
Explanation:
given data 
wheel rotates = 9pi/8 radians
total height of the ferris wheel = 246 ft
solution
we can say here that height of the ferris wheel is same as the diameter of the wheel 
and wheel is circular in shape 
so we get here first radius of wheel that is 
radius = half of diameter ..........................1
put here value and we get 
radius = 0.5 × 246 
radius = 123 ft 
and 
wheel travel distance = length of arc by a angle of wheel rotates 
so here length of arc will be 
arc length = radius × wheel rotates angle .....................2
put here value and we get 
arc length = 123 × 
 
 
arc length = 434.7178 ft 
so ferris wheel travel approx = 434.72 ft