density of a planet? (1 Viewer)

[shkspeare]

how do u find the density of a planet?

i am referring to questoin 9(c) of chapter 1 questions in jacaranda book

 

[ND]

I'm not sure of the question, but density is always mass/volume. To find the volume of a sphere it's (4/3)*r^3 (if i remember correctly).

 

[Xayma]

Originally posted by ND
I'm not sure of the question, but density is always mass/volume. To find the volume of a sphere it's (4/3)*r^3 (if i remember correctly).

The volume of a sphere is (4/3)*pi*r³

 

[ND]

Haha yeh pi usually helps too.