Question

4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall (see figure). How long should the pieces of PVC plumbing pipe be?

Answer 1

How many corners is this so-called teepee (or tipi) supposed to have? Is it pyramidal or does it have two parallel triangular sides?

A traditional native American tipi is conical. That does not appear to be what your problem is about.

Answer 2

I think I got it, but thank you very much:)