  The determination of the equation of state (EOS) for nuclear matter has been
one of the biggest problems in nuclear astrophysics, because the EOS is
essential for determining the properties of neutron stars. To constrain the
density-dependence of the nuclear symmetry energy, several nuclear experiments,
e.g., reported by the S$\pi$RIT and PREX-II collaborations, have recently been
performed. However, since their uncertainties are still large, additional
constraints such as astronomical observations must be crucial. In addition, it
is interesting to see the effect of their reported value on neutron star
properties. In this study, focusing on the relatively lower density region, we
investigate the allowed area of the neutron-star mass and radius relation by
assuming the constraints from S$\pi$RIT and PREX-II. Each region predicted by
these experiments is still consistent with the allowed area constrained by the
various astronomical observations. Our results show that terrestrial nuclear
experiments must provide further constraints on the EOS for neutron stars,
complementing astronomical observations.
