Saturn’s rings span up to about (7.5 · 10^-1) of the distance between the earth and its moons. of saturn’s rings span up to (2.82 · 10^5 kilometers, what is the distance between earth and its moons.
3.76 · 10^5 km
21,150 km
21.15 · 10^4 km
2.115 · 10^5 km

2.82 × 10^5 = (7.5×10^-1) × Length between the earth and the moon

Length between the earth and the moon = (2.82×10^5)÷(7.5×10^-1)
                                                                     = 376000
                                                                     = 3.76×10^5

Are you trying to figure out the volume?