5. A ferris wheel has a radius of 45 feet and the bottom of the wheel is 7 feet off the ground. When in motion it takes 40 seconds for the wheel to make one revolution a. Sketch one cycle of the model b. Write a sinusoidal equation to define the height above the ground of a chair that starts at the bottom of the wheel in terms of time, in seconds, after the wheel begins rotating. c. Use this equation to find how high the chair will be after 20 sec. d. What are the first 4 times that the chair is 30 ft above the ground