Scale Factor #2

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 to the actual dimensions.

Front

If a scale drawing has a scale of 1 inch = 20 feet, how do you find the actual length of an object that measures 3 inches in the drawing?

Back

Multiply the drawing measurement by the scale factor: 3 inches x 20 feet/inch = 60 feet.

Front

What is the purpose of using scale drawings?

Back

Scale drawings are used to represent large objects or distances in a smaller, manageable size while maintaining the correct proportions.

Front

How do you convert a scale of 4 cm:9 ft to a scale factor?

Back

Divide both sides by 4 to get the scale factor: 1 cm:2.25 ft.

Front

What is the actual length of an object if it measures 5 inches on a scale drawing with a scale of 1 inch = 15 feet?

Back

5 inches x 15 feet/inch = 75 feet.

Front

If the scale factor is 3, what does that mean for the dimensions of an object?

Back

It means that the actual dimensions are three times larger than the dimensions in the scale drawing.

Front

How do you find the actual distance between two points on a map if the scale is 1 inch:50 miles and the distance on the map is 2 inches?

Back

Multiply the map distance by the scale: 2 inches x 50 miles/inch = 100 miles.

Front

What is the scale factor if a model is 1/4 the size of the actual object?

Back

The scale factor is 1/4.

Front

If a drawing of a park is 6 inches long and the scale is 1 inch = 30 feet, what is the actual length of the park?

Back

6 inches x 30 feet/inch = 180 feet.

Front

What does it mean if a scale drawing has a scale of 1:100?

Back

It means that 1 unit on the drawing represents 100 units in reality.