Question

What is volume in `"km"^3`?

Answer 1

In `1` `km^3`? Well `10^9` `m^3`.

Explanation:

One cubic kilometre is equivalent to one thousand million cubic metres, i.e. `1*km^3` `=` `[1xx10^3]^3*m^3` `=` `10^9*m^3`.