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1cm-20km
x - 7100km
x=7100km*1cm/20km
x=7100/20
x=355cm-długość rzeki na mapie
POzdro :)
1cm-20km
x-7100km
7100km*1cm /20km = 355cm
1cm - 2000000cm
1cm. - 20000m
1cm. - 20 km
x - 7100 km.
x= 7100km * 1cm : 20 km. = 710 : 2 = 35,5 cm
Odp. na mapie ta rzeka ma 35,5 cm.