Respuesta :

landonwebb74

Answer:

1.5 cm.

Step-by-step explanation:

If 1 cm = 30 km, then half a cm equals 15 km.

We need to find 45 km. We know that 1 cm = 30km and half a cm = 15 km. Adding both of these together, we can get 1.5cm = 45km.