Calculate, in litres, the amount of oil one barrel can hold. Round your answer to the nearest litre.

Here are the solutions to the questions:

4.1.1: Calculate, in litres, the amount of oil one barrel can hold. Round your answer to the nearest litre.

Step 1: Convert 1 barrel to US gallons.
We are given that $1 \text{ barrel} = 42 \text{ US gallons}$.

Step 2: Convert US gallons to litres.
We are given that $1 \text{ litre} = 0.064172 \text{ US gallons}$.
To find the number of litres in 42 US gallons, we divide the number of US gallons by the conversion factor:

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