Please help with these questions.

Use the following information to answer questions 5-8. The height, h, in metres, above the ground of a car as a Ferris wheel rotates can be modelled by the function h(t) = 17 cos 110 + 18, where r is the time, in seconds. 5. What is the radius of the Ferris wheel? A. 18 m C. 34 m B. 17 m D. 8.5 m 6. How long does it take for the wheel to revolve once? 110 A. C. S 110 B. 220 s D. 110 s 7. What is the minimum height of a car? A. 110 m C. Im B. 128 m D. 18 m 8. What is the maximum height of a car? A. 18 m C. 128 m B. 110 m D. 35 m