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Scale Drawings
Scale Factor
Scale Drawing and Area
Drawing Pictures to Scale
100

Jace made a scale drawing of his bedroom. In his drawing, 1 cm represents 2 feet. The length of his room on the scale drawing is 7.5 cm. What is the actual length of his room? Be sure to label your answer.

15 feet

100

Determine the scale factor of Problem #1 on the board.

2/1 or 2 

100
Micah creates a drawing of his room. On his drawing, his room measures 5 cm. by 6 cm. If Micah uses a 1 cm : 2 ft scale to create his drawing, what is the area of his actual room? 

120 sq. ft. 

100

Step 1: Use the grid to draw a new figure using the given scale.

Scale Factor: 2

(Drawn on grid paper) 

200

Libby is on a road trip, and is reading a map that has a scale of 2 in : 25 miles. Her trip measures 6.5 inches on the map. What will be her actual distance for the trip? Be sure to label your answer. 

81.25 miles

200

Determine the scale factor of Problem #2 on the board.

1/3

200

A rectangle measures 3 ft. by 10.5 ft. If the rectangle is enlarged by a scale factor of 2, what would be the area of the rectangle? 

126 sq. ft. 

200

Step 2: Calculate the perimeters of the original figure and the scale drawing.  

*Perimeter of Original Figure: 8 units
*Perimeter of Scale Drawing: 16 units

300

Joseph is building a model of a car. The scale is 1 inch : 36 inches. The actual length of the car is 162 inches. How long will the model be? Round to the nearest tenth. 

4.5 inches 

300

Determine the scale factor of Problem #3 on the board.

3/5

300

A floor plan of Justice's new house has a scale of 1 inch : 6 ft. On the floor plan, Justice's bedroom is 2 in. by 2 in. What is the actual area of Justice's bedroom? 

144 sq. ft. 

300

Step 3: Calculate the areas of the original figure and the scale drawing.  

*Area of Original Figure: 3 sq. un.
*Area of Scale Drawing: 12 sq. un.