Scale Factor and Scale

The actual distance between two house is 5 meters. On a map the distance is 10 cm. What is the scale factor?

• 1:2

• 1:5

• 1:50

Whittemore Park Middle School is 30 feet tall. A 5 inch tall scale model of the school was made by the art club. What is the scale of the model?

• one inch = 6 feet

• one inch = 6 inches

• one inch = 72 inches

The Waccamaw Bridge is 60 yards long. The length of a model of the bridge is 15 inches long. What is the scale of the model?

• one inch = .25 yards

• one inch = 4 yards

• one inch = 144 inches

The actual length of a car is 14.5 ft. A model of the car is 7.25 inches long. What is the scale?

• one inch = 24 inches

• one inch = 2 ft

• one inch = 0.5 ft

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

what is the length of x?

• 9mm

• 4mm

• 4/9mm

• 36mm

A model airplane is built with a wing span of 23 inches. The actual wing span is 92 ft. What is the scale of the model?

• one inch = 48 inches

• one inch = .25 feet

• one inch = 4 feet

An area rug is 9 feet wide. In a photograph, the image of the rug is 3 inches wide. What is the scale of the model?

• one inch = 3 feet

• one inch = .33 feet

• one inch = 36 inches

A large American flag measures 225 feet wide. In an advertisement for renting this flag, the image of the flag is 4 inches wide. What is the scale factor?

• 675

• 56.25

• 65

If George Washington's face is 60 ft tall on Mt. Rushmore and a model of his face is mountain is 60 inches tall. What is the scale factor?

• 1: 1

• 1:12