The eccentricity,e, of the Moon's orbit is 0.0549 and the mean orbital radius rL=(ab)^1/2 is 384,100 km.
A) Calculate the lengths of the principal axes a and b of the Moon's orbit.
B) How far is the center of Earth from the center of the elliptical orbit?
C) Calculate the distances of the moon from the Earth at perigee and apogee.