M=4πr3GT2M=\frac{4 \pi r^{3}}{G T^{2}}M=GT24πr3
M=4πr2GT2M=\frac{4 \pi r^{2}}{G T^{2}}M=GT24πr2
M=4π2r3GT2M=\frac{4 \pi^{2} r^{3}}{G T^{2}}M=GT24π2r3
M=4π2r3GT3M=\frac{4 \pi^{2} r^{3}}{G T^{3}}M=GT34π2r3