Sample Questions

1. The world's oceans contain approximately $1.35\times10^9\;km^3$ of water. What is this volume in litres?
2. The estimated amount of recoverable oil from a particular oilfield is $9.6\times10^8$ barrels. Given that 1 barrel = 42 gal, 1 gal = 4 qts and 1 qt = $9.6\times10^{-4}\;m^3$, calculate this amount of oil in cubic metres.

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