Algebra
posted by Anonymous .
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. How long should the PVC plumbing pipe be?

Assume the floor of the tent is a square. Consider the right triangle formed by a vertical line at the center (8 ft), a horizontal line from a corner to the center of the floor (6sqrt2 feet) and a (hypotenuse) side support rod. I get sqrt 136 = 11.66 feet for each of the four side support poles. If the corners are staked, only those four poles are needed.