You've been provided with a tuple named people that holds data on individuals' names, ages, and heights in the format: (('name', age, height), ('name', age, height), ...). Here's a snapshot of the data:

Name	Age	Height
Alex	23	178
Noah	34	189
Peter	29	175
John	41	185
Michelle	35	165

To extract specific information using positive indexing, follow these steps:

1. Display details (the entire tuple) about Peter.
2. Display John's height.
3. Display Alex's age.