# math

posted by
**Rocio Aguilera**
.

The mean radius of the Earth is 6.37 x 106 meters (m). Assuming the earth can be modeled as a perfect sphere

a. In cubic meters (m3 ) what is the volume of the Earth?

b. In meters (m) what is Earthâ€™s circumference?

c. If the mean density is 5.515g/cm3, what is the Earthâ€™s mass in kilograms (kg)?