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 proportional relationship between two similar figures.

Front

If a scale factor is greater than 1, what happens to the figure?

Back

The figure gets bigger.

Front

If a scale factor is less than 1, what happens to the figure?

Back

The figure gets smaller.

Front

What is the scale factor if 1 inch on a drawing represents 10 feet in reality?

Back

The scale factor is 10.

Front

How do you calculate the actual distance using a scale?

Back

Multiply the distance on the map or drawing by the scale factor.

Front

What is the actual distance if the scale is 2 inches = 40 miles and the distance on the map is 4.125 inches?

Back

The actual distance is 82.5 miles.

Front

In a scale drawing, if the width is 1.25 inches and the scale factor is 10, what is the actual width?

Back

The actual width is 12.5 feet.

Front

What is the formula to find the scale factor?

Back

Scale Factor = Actual Size / Drawing Size.

Front

If a drawing of a room is 8 inches wide and the actual room is 32 feet wide, what is the scale factor?

Back

The scale factor is 4.

Front

What does it mean if a scale factor is 1/2?

Back

It means the figure is half the size of the actual object.