Scale Factors Flashcard

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 size of a scale drawing compared to the original size.

Front

If the original size is 12 units and the scale factor is 1/4, what is the size of the scale drawing?

Back

3 units.

Front

What is the scale factor if a model is 4 times larger than the original?

Back

4.

Front

If a flagpole model has a scale factor of 1 in. = 4 ft, and the model measures 12 inches, how tall is the actual flagpole?

Back

48 feet.

Front

What is the formula to find the size of a scale drawing?

Back

Size of scale drawing = Original size × Scale factor.

Front

If the scale is 1 in. = 7 ft, how wide is a backyard that is 49 ft in the drawing?

Back

7 inches.

Front

What does a scale factor of less than 1 indicate?

Back

It indicates a reduction in size.

Front

What does a scale factor greater than 1 indicate?

Back

It indicates an enlargement in size.

Front

How do you convert feet to inches in a scale drawing?

Back

Multiply the number of feet by 12 to get inches.

Front

If a drawing has a scale of 1:100, what does this mean?

Back

1 unit on the drawing represents 100 units in reality.