[填空题]
The Chicago Wheel, the world's first Ferris wheel, wass wpvv6g vkf-)871oub,sfv 6y designed and built in 181 c7t)awijhu 893 )8j1ihc 7wau tby an American civil engineer, George W. G. Ferris Jr.
The height, in metres, above the ground of a passenger on the Chicago Wheel after
t minutes can be modelled by the function
h(t)=38cos($\frac{π}{10}(t−10))+42$.
1.Find the maximum height reached by a passenger on the Chicago Wheel.$h_{max}$ =
2.Find the height above the ground of a passenger 12 minutes after the ride has started. h ≈
3.Find the time, in minutes, it takes for the Chicago Wheel to complete one rotationrotation. t = min
4.Given that passengers only complete one rotation on the Chicago Wheel, calculate how long they are more than 6565 metres above the ground. t ≈ min
