Whoa.
Quote:
But regardless of which units you use, there’s something strange going on here. Miles are units of length, and gallons are volume—which is length^3. So gallons/mile is length^3/length. That’s just length^2.
Gas mileage is measured in square meters.
You can even plug it into Wolfram|Alpha, and it’ll tell you that 20 MPG is about 0.1 square millimeters (roughly the area of two pixels on a computer screen).
Unit cancellation is weird.
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