Answer:
1.5 cm = .015 meters
3.5 / .015 = 233.33
So, in his scale everything will be 233.33 times smaller.
So, if the building is 180 meters tall, his model will be (180 / 233.33) meters tall, which equals 0.771439592 meters which equals
77.14 centimeters.
Step-by-step explanation:
