Graph h = f(t) where h is height above groumd (in meters) at time t in minutes. First find the suitable interval for t greater than or equal 0. Ferris wheel is 50 meters in diameter and boarded from the platform which is 5 meters above ground. Six o'clock position on Ferris wheel is level with loading platform. Wheel completes 1 full revolution every 8 minutes. You make 2 complete revolutions on wheel, starting at t=0.