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Actually, I think the next step will probably be APCs that run on tracks, at 80 mph (128.748 kph). They'll burn diesel fuel, and their air intakes and exhausts will be 10 feet (3.048 meters) above the road surface.
Why do you feel the need to say the distances to 3 decimal places? When they says 80 mph, they never mean exactly 80 mph, they mean about 80. You might as well just say it's 130 km/h. Similarly with 10 ft.
The conversion software is that accurate.
Yes but the input isn't that precise and so the output should also be appropriately rounded up.
I copied and pasted. Sorry. Next time I will round.

I have a particular bugbear, especially with conversions, but also in other calculations of erroneously introducing more precision than is merited or even possible. Usually precision decreases with time (rather as disorder increases).

You know what they say: Measure with a micrometer, mark with chalk, cut with an axe.

I do believe that is how our house was built.
It's the way things go.
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