Question

The radius of 6400 km and its mass is 5.98 ×10 ^24 kg. What is the density of the earth?

Answer 1

Answer:

it is mass/volume of the earth.

Answer 2

Important assumption is that earth is a sphere then only we can find volume.

(In reality earth isnt a complete sphere)

Radius = 6400 km = 6.4 x 10^3 km = 6.4 x 10^6 m

Volume of earth = 4/3 pi R^3 = 4/3 * 3.14 * (6.4 x 10^6)^3

                           = 1097.50954 x 10^18

Density of earth = Mass of earth/ Volume of earth

                           = 5.98 x 10^24 kg/ 1097.50954 x 10^18

                           = 0.005445 x 10^6

                           = 5.445 x 10^3 kg/m^3

Hope you find it helpful!! pls mark brainliest, no copy paste so took time to make :D