is a km3 1000 m3 or 1,000,000,000 m3?
to go from km to m you multiply by 1,000.
to go from km^2 to m^2 you multiply by 1,000^2.
to go from km^3 to m^3 you multiply by 1,000^3.
So 1km^3 is 1,000,000,000m^3
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alt Hacker News
to go from km to m you multiply by 1,000.
to go from km^2 to m^2 you multiply by 1,000^2.
to go from km^3 to m^3 you multiply by 1,000^3.
So 1km^3 is 1,000,000,000m^3