  Explicit solutions of the two-dimensional floating body problem (bodies that
can float in all positions) for relative density rho different from 1/2 and of
the tire track problem (tire tracks of a bicycle, which do not allow to
determine, which way the bicycle went) are given, which differ from circles.
Starting point is the differential equation given in archive physics/0205059
and Studies in Appl. Math. 111 (2003) 167-183.
