1. 7.5 Scale Drawings
11/3/16

2. Scale Drawings
Scale drawing: a 2-D drawing that represents a real object (for example, a blueprint)
Scale model: a proportional 3D model of an object (for example, a realistic sculpture)
Scale:

3. Example 1
On a map, Los Angeles is 2 inches from San Diego. The scale says 1 in:60 mi. What is the actual distance?

4. Example 2
You are creating a map of your room with a scale of 2 in:3 ft. In real life, your bed is 8 feet long. How many inches long will it be on your map?

5. Finding a Scale Example 3 Fully simplify the fraction
A room is 36 feet wide. On a blueprint, it is only 18 inches wide. Find the scale of the blueprint.

6. Scale Factor A scale written without units
The units must be the same to write them as a scale factor!

7. Example 4
A model of a building is 10 inches tall. The actual monument is 100 feet tall.
What is the scale?
What is the scale factor?

8. Example 5
Strawberry Point, Iowa has a strawberry sculpture that is 180 inches tall. If the scale factor of the model is 120:1, how tall was the actual strawberry?