Question 357380
If you look at the tepee from the side you will see an isoceles triangle whose height is 4 feet and whose base is 6 feet.
If you drop a line from the apex perpendicular to the base you will have two right triangles. The height of the right triangle is 4 feet and the base will be just half of the width of the base of the isoceles triangle, or 3 feet.
You need to find the length of the hypotenuse of the right triangle.
Use:
{{{c^2 = a^2+b^2}}} Substitute a = 3 and b = 4
{{{c^2 = 9+16}}}
{{{c^2 = 25}}} Take the square root of both sides.
{{{c = 5}}}
The PVC plumbing pipe should be 5 feet long.