How much water is there on, in, and above the Earth?

Recently came across this interesting questions 

How much water is there on, in, and above the Earth?i.e. all the water of the earth is collected and made into a water drop what will be the dimension of the drop?

 Solution:

And to compare when this drop is placed on earth not even half of north America is covered?

That's all water we have guys and its not over yet 90% of this sea water. Comments?

References:

http://water.usgs.gov/edu/earthhowmuch.html

https://en.wikipedia.org/wiki/Earth_radius