With the help of the Newtonian limit (25.35) of the Riemann curvature tensor, show that near Earths

Question:

With the help of the Newtonian limit (25.35) of the Riemann curvature tensor, show that near Earth’s surface the radius of curvature of spacetime has a magnitude R ∼ (1 astronomical unit)≡(distance from the Sun to Earth).What is the radius of curvature of spacetime near the Sun’s surface? Near the surface of a white-dwarf star? Near the surface of a neutron star? Near the surface of a one-solar-mass black hole? In intergalactic space?