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Fizica:19,97km-970...=19...
13256mm-25,6...=13...
...mm=3,142...=31,42km
37989mm-20km=...m


Răspuns :

19,97km-970m=19km
13256mm-25,6mm=13230,4mm
31420000mm=3,142...=31,42km
37989mm-20km=0,037989km-20km=-19,962011