Re: OT: Converting miles/km

On 2024-09-20 04:10, Bertel Lund Hansen wrote:

Helmut Richter wrote:
 

And easier to remember than 1.609344. But when will you need such precision?
For instance, when you drive on German roads outside villages, you must
reduce your speed to 31.0685 mph whereas the rough rule 1 mi = 1.6 km would
have allowed you 31.2500 mph.

 I haven't neede it, but just for fun I have calculated the Danish speed
limits in miles. If you want round firgures, it's:
      50 km = 30 mi
     80 km = 50 mi
   110 km = 70 mi (2 km too much)
   130 km = 80 mi

'mi' should be 'MPH'.
I do pretty much mental conversions for distance, volume, weight, but I have no use at all for metric area or pressure (to name just 2).
Almost nobody in these parts would speak to me in those terms, nor would they know what magnitude I was speaking of.
--
I took a course in speed waiting.
Now I can wait an hour in only ten minutes.