Scale Factor

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine the ratio of the dimensions of a scale drawing or model to the actual object.

Front

If a scale drawing of a car is 3 cm long and the scale is 1 cm:4 ft, what is the actual length of the car?

Back

12 feet

Front

What is the formula to find the actual size using scale factor?

Back

Actual Size = Scale Drawing Size × Scale Factor.

Front

In a scale drawing, if the scale is 1 inch = 4 feet, how many inches represent 20 feet?

Back

5 inches.

Front

What does it mean if a model airplane has a scale of 1 inch = 48 inches?

Back

It means that every 1 inch on the model represents 48 inches in real life.

Front

How do you convert a scale drawing measurement to actual size?

Back

Multiply the measurement on the scale drawing by the scale factor.

Front

If a soccer field in a drawing is 14 inches long and the actual field is 98 yards long, what is the scale of the drawing?

Back

1 inch = 7 yards.

Front

What is the actual distance between two cities if they are 4 cm apart on a map with a scale of 1 cm = 5 km?

Back

20 km.

Front

What is the scale of a model if the actual wing span is 92 ft and the model's wing span is 23 inches?

Back

1 inch = 4 feet.

Front

If a rectangle in a scale drawing has a length of 5 cm and the scale is 1 cm = 2 m, what is the actual length?

Back

10 m.