Scale Drawing Area

Here is an unlabeled rectangle, followed by other quadrilaterals that are labeled. Select all quadrilaterals that are scaled copies of the unlabeled rectangle.

• A

• C

• D

• E

• F

If Quadrilateral Q is a scaled copy of Quadrilateral P created with a scale factor of 3, what is the perimeter of Q?

• 158

• 186

• 180

• 165

A model airplane is built at a scale of 1 to 72. If the model plane is 8 inches long, how many feet long is the actual airplane?

• 280 ft

• 8 ft

• 642 ft

• 576 ft

Elena finds that the area of a house on a scale drawing is 25 square inches. The actual area of the house is 2,025 square feet. What is the scale of the drawing?

• 80

• 75

• 92

• 81

A blueprint was using a scale of 3cm = 4.5m. Find the actual length if it is 5cm on the drawing. (Hint: simplify the scale first)

• 7.5

• 13.5

• 1.5

• 1.7

If the scale factor is less than one, the new figure will be:

• an enlargement

• a reduction

• a scale factor

• bigger

If the scale factor is greater than one, the new figure will be:

• a reduction

• an enlargement

• a scale

• not proportional

Which triangle is similar to the above triangle?

• A

• B

• C

• D

Q1. What is the total number of states in the USA?

• 1) 74

• A) 100

• 2) 104

• 3) 108

Triangle ABC and XYZ are similar.  Use your knowledge of scale factor to find the length of X.

• 20

• 25

• 100

• 40