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2) 74 km = 74000m = 7400000cm
7400000 : 400000 = 18,5 cm
3) 1215 m = 121500cm
121500 / 16,2 = 7500
Skala 1:7500
4) 50 cm2 * 300000² = 50 * 90000000000 = 4500000000000 cm² = 450000000m² = 450 km²
Liczę na naj ;)