Which expression gives the density ρ\rhoρ of the planet?
3πGT2\frac{3\pi}{GT^2}GT23π
34πGT2\frac{3}{4\pi GT^2}4πGT23
π3GT2\frac{\pi}{3GT^2}3GT2π
3π2GT2\frac{3\pi^2}{GT^2}GT23π2