Quit inventing nonexistent precision when doing unit conversions. If the original source quotes 1000 km, which is obviously already an estimate (being a round number) and has only 1 sig fig, “600-ish” miles is all the imperial unit precision you get.
Quit inventing nonexistent precision when doing unit conversions. If the original source quotes 1000 km, which is obviously already an estimate (being a round number) and has only 1 sig fig, “600-ish” miles is all the imperial unit precision you get.