Sagot :
a)60mph=60*1609.344/1000=96,56km/h
d'où 90km/h<60mph
b)80km/h=80*(1000/1609.344)=49,71mph
Bonjour,
a)
1 mile = 1609,344m = 1,609344km
60 miles/h = 1,609344*60=96,56 km/h.
b)
80km/h = 80/1,609344=49,70miles/h
J'espère que tu as compris
A+