How many cubic millimeters are in 10 cubic kilometers?

Answer 1

(1 km) x (1,000 m per km) x (1,000 mm per m) = 106 mm per km

(10) (km3) x (106 mm per km)3 = (10) x (1018) = 1019 of them.

But wait! Don't go away. We've been in this business long enough to know

that anyone with any practical need for this information surely knows how to

calculate it, and the only reason it ever shows up here is because somebody

wants to see a big number.

So here you go. In abject violation of four hundred years of work in arithmetic

just to develop scientific notation so we could avoid the need to write numbers

that stretch across the page, here's that same answer all written out:

10 cubic kilometers is the same as 10,000,000,000,000,000,000 cubic millimeters.