Laying Some Pipe

So these crazy guys want to put a pipe around the world that will be sitting on the surface of the earth at the equator, (assume the world is perfectly spherical and there are no hills or valleys at the equator). Unfortunately, they mess up when they order the pipe, and they order it 3 feet too long. Instead of cutting the pipe, (it's made of an indestructible material), they decide they will just push the ends together and accept the fact that it will now be a bit larger than the circumference of the Earth. Assuming even spacing around the globe, how high off the surface will it be?

What would the answer be if they wanted to do the same thing, and ran into the same problem, on the Sun? On Mars? Around Donald Trump's head?