this question is about astronomy math

Question

Saturn has a density of p=687kg/m3. If you also know that the mass of Saturn is m=5.68kg x10^26, then calculate the radius of Saturn using the definition of density and the formula for the volume of a sphere. Convert and report your answer in kilometers

Answer 1

need

6.87x10²=5.68x10²⁶/[(4/3)πr³]

r³=(5.68/6.87)x10²⁴/(4π/3)

r=[3(5.68)/(4π)(6.87)]^1/3x10⁸

r=5.82x10⁷ meters