Answer:
The scale of the map is 1 cm: 0.5 km, which means that 1 cm on the map represents 0.5 km in real life.
If Birch Avenue is 3.2 cm long on the map, we can use this scale to find the actual length of the street. To do this, we can multiply the length of the street on the map (3.2 cm) by the scale factor (0.5 km/cm).
3.2 cm * 0.5 km/cm = 1.6 km
So, the actual length of the Birch Avenue is 1.6 km.