1. Scale Drawings and Models
Lesson 4-6
Scale Drawings and Models

3. Definitions
Scale Drawing or Scale Model- is used to represent an object too large or too small to be drawn or built at actual size.
Scale- is determined by the ratio of a given length on a drawing or model to its corresponding actual length.

4. The distance from Bingston to Alanton is 1. 5 inches on a map
The distance from Bingston to Alanton is 1.5 inches on a map. Find the actual distance if the scale on the map is 1 inch = 5 miles.
Find the scale factor for the map.

5. A wall in a room is 15 feet long
A wall in a room is 15 feet long. On a scale drawing it is shown as 6 inches. What is the scale of the drawing?

6. At 555 feet tall, the Washington Monument is the highest all-masonry tower. A scale model of the monument is 9.25 inches high.
What is the model’s scale?
What is the scale factor?