Asked by: Dallas

The mean radius of the earth is approximately 6.4 million meters (exact = 6.37 x 10

(4/3) x 3.14 x 6400000

This comes to 1,097,509,500,000,000,000,000 cubic meters. Needless to say, this is very large! Inside of one cubic meter you could fit seven or eight high school students. I know, I teach high school and I have fit eight students in a cubic meter! So, this would be 137,188,690,000,000,000,000 students. Is your high school this big?

This number of students is so large that if you could count one number per second it would take you more than 4 trillion years to count this high. If you counted by millions it would still take you over a million years to get to this number! It would take you over eight million years to count to the number of cubic meters the earth is. So, the earth is very large indeed!

Answered by: Tom Young, B.A., Science Teacher, Whitehouse High School

'Physics is mathematical not because we know so much about the physical world, but because we know so little; it is only its mathematical properties that we can discover.'**Bertrand Russell**

(*1872-1970*)

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