Scale Factor and Scale Drawings

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine how much larger or smaller a scale drawing or model is compared to the actual object.

Front

How do you calculate the scale factor between two similar figures?

Back

To calculate the scale factor, divide the length of a side of the larger figure by the corresponding side of the smaller figure.

Front

If a scale drawing has a scale of 1 inch : 5 feet, how many feet does 3 inches represent?

Back

15 feet (3 inches x 5 feet/inch = 15 feet).

Front

What is the purpose of a scale drawing?

Back

A scale drawing represents an object or area in a proportional size, allowing for accurate representation and measurement.

Front

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

Back

Multiply the measurement on the scale drawing by the scale factor to find the actual size.

Front

If a model is built at a scale of 1:10, what does this mean?

Back

It means that 1 unit of measurement on the model represents 10 units of the same measurement in real life.

Front

What is the actual length of a parking lot that measures 4 inches on a scale drawing with a scale of 1 inch : 50 feet?

Back

200 feet (4 inches x 50 feet/inch = 200 feet).

Front

If a tent in a scale drawing is 3 inches wide and the scale is 1 inch : 2 feet, what is the actual width of the tent?

Back

6 feet (3 inches x 2 feet/inch = 6 feet).

Front

What is the actual distance if a map shows 2 inches between two cities and the scale is 1 inch : 100 miles?

Back

200 miles (2 inches x 100 miles/inch = 200 miles).

Front

How do you find the scale of a drawing?

Back

To find the scale, compare the measurements of the drawing to the actual measurements of the object.