Question

How deep would the water be if the Earth was smooth?

Answer 1

Earth water = 1,386,000,000 km^3
Earth radius = 6371 km

Answer 2

from here we can calculate R2 and hence the depth

Answer 3

R2 would be 6371km

Answer 4

well then we work out R1 using the above and hence the depth

Answer 5

is volume 4/3piR^3?

Answer 6

\[V_W=\frac43\pi R_2^3-\frac43\pi R_1^3\]\[\frac43\pi R_2^3=\frac43\pi R_1^3+V_W\]\[R_1^3=R_2^3-\frac{3V_W}{4\pi}\]

Answer 7

This won't work... I'm removing the radius of the volume, not the volume.