Construct a triangle by drawing a line parallel to XZ at Center W; intersecting the radius from Center Y to Z.
It is a right-angled triangle with one side at the same length as XZ = 42.
Length of the other side of the right-angle is the difference in radius = 19-11 = 8
Distance between centers = length of hypothesis
= sqrt(42^2 + 8^2)
= 42.755 = 42.76
