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Efectuati 18grade :5

Răspuns :

1 grad =60 minute => 18 grade =15 grade +3 grade =15 grade +3*60 minute =
                                              =5*(3 grade +36 minute) =>
=> 18 grade :5 = 3 grade si 36 minute

18° : 5 = 3,6°
0,6° × 60' = 36'
18° : 5 = 3° 36'