Dimensions of Motorhome, badminton court?

When designing a house / yard..............................2 questions..................a motorhome say somewhere between 25' length to 45' length, what should the garage door size be in terms of height, width and what should the garage be in length...............................2nd question, a badminton court, what are the length / width of a typical badminton court? And is it possible to play tennis on a badminton court?