Answer:
1 : 700 000
Step-by-step explanation:
63 km = 6 300 000 cm
Make it a proportion:
9 cm - 6 300 000 cm
1 cm - x cm
x = [tex]\frac{6 300 000 * 1}{9}[/tex] = 700 000 cm
Here we get that in map 1 cm represents 700 000 cm in reality, so the scale is 1 : 700 000