bonjour
1 cm carte = 1 000 000 cm réels
255 km = 25 500 000 cm réels
25 500 000 : 1 000 000 = 25.5 cm plan
1 cm plan = 2 500 cm réels
1.050 km = 105 000 cm
distance plan = 105 000 : 2 500 = 42 cm
1 cm plan = 5000 mm réels
29.5 m = 29 500 mm
distance plan = 29 500 : 5 000 = 5.9 mm
14.5 m = 14 500 mm
distance plan = 14 500 : 5000 = 2.9 mm
