A route is 7.5 centimetres long on a map with scale 1:60,000. What is the route's real length? Enter the number of kilometres.
Bonne réponse
4.5
Explication
The real distance is 7.5 times 60,000, or 450,000 centimetres, which converts to 4.5 kilometres. Interpreting 450,000 as metres instead would give 450 kilometres, a hundredfold unit-conversion error.