(6.42)/(1.5 x 10^8)=4.3 x 10^-8???
I think so....
The total population of the earth was estimated to be 6.42 billion people.Given that the total land surface area of the earth is about 1.5×10^8km^2.Find the average number of people living in 1 km^2 of land on earth,correct to 2 significant figures.Thanks a lot for helping me!!^^
2 answers
Yeah..same as my answer sheet !thanks:)
1 answer