The North Pole is in the middle of the ocean. A person at sea level at the North Pole is at an elevation of 3,949 miles from the center of the earth. The sea floor below the North Pole is an elevation of approximately -2.7 miles. The elevation of the South Pole is about 1.7 miles. How far is a person standing on the South Pole from a submarine at the sea floor below the North Pole?