Answer:
The answer is 20 cm.
Explanation:
From the scale, we know that 1 cm in the model represents 6 meters in the actual building.
So, h cm in the model represents 6h meters in the actual building.
The actual building is 120 meters tall, so 6h = 120 meters.
Dividing both sides by 6, we get:
h = 20 cm.
Therefore, the height of the model is 20 cm.