Question 1197194
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Hi
Ferris Wheel where h = f(t) is height from ground after a period of time
In General:  h = radius+platform height   -  r*cos(2πt/time for full revolution)

 A Ferris wheel is 15 meters in diameter,  ( r = 7.5m)
boarded from a platform that is 5 meters above the ground.
 completes 1 full revolution in 8 minutes

  h = f(t) = 12.5 + 7.5cos(πt/4)
Note: at 0 min, h  = 12.5-7.5 = 5m
      at 4 min, h = 12.5m + 7.5m = 20m ( The diameter + the Platform Height)
Wish You the Best in your Studies.
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