(1) When the distance between the cinema and the library is 1.5cm, and 600m = 6000m, the scale is 1.5: 60000 = 1: 40000; Answer: The scale of this picture is 1: 40,000. (2) Because 1.8 km = 180,000 cm, 450 m = 45,000 cm, then 180,000× 140,000 = 4.5 cm, 45,000 cm. …