Description: Understand how a scale drawing is converted into real numbers using the scale factor. Created by Sal Khan. The dimensions of the living room in the scaled plan are 4 centimeters by 5 centimeters right over here. So if we had 80 meters in the house, that would be represented as 1 meter on the floor plan. 1 centimeter on the floor plan would represent 80 centimeters in the house.*Teacher Advisor is 100% free.