d/D=1/N
d=distanta de pe harta
D=distanta in realitate
d si D trebuie exprimate in aceeasi unitate de masura
1/N =scara hartii
a)
180 km=18000000 cm
d/18000000=1/1000000
d=18000000/1000000=18 cm
b)
240 km=24000000 cm
d/24000000=1/1000000
d=24000000/1000000=24 cm
c)
90 km=9000000 cm
d/9000000=1/1000000
d=9000000/1000000=9 cm