Related questions

Question

Assuming that a planet is a perfect sphere with a circumference of 21024 km and an average density of 2.41 g/mL, what is its approximate mass? The circumference of a sphere is 2 π r where r is the radius of the sphere, the volume of the sphere is 4 π r3, and 1 metric ton = 1000 kg. Answer in units of metric ton.