Answer:
The length of the base of the scale model is 20 feet.
Step-by-step explanation:
These are the measurements of the real building:
Height = 200 feet
Width = 200 feet
Length = 200 feet
These are the measurements of the real scale model:
Height = 10% of 200 = 0.1 * 200 = 20 feet
Width = 10% of 200 = 0.1 * 200 = 20 feet
Length = 10% of 200 = 0.1 * 200 = 20 feet
The length of the base of the scale model is 20 feet.