Scale Factor Review

A scale factor greater than one creates ....

• a reduction

• an enlargement

• an exact copy

• none of the above

A scale factor less than one creates ....

• a reduction

• an enlargement

• an exact copy

• none of the above

How does scale factor change the perimeter?

• by the scale factor

• by the scale factor squared

• by the scale factor cubed

• scale factor does not change the perimeter

How does scale factor change the area?

• by the scale factor

• by the scale factor squared

• by the scale factor cubed

• scale factor does not affect the area

The perimeter of a rectangle was 121m, and was reduced to 11m. What was the scale factor used to reduce the shape?

• 11

• 12

A rectangular park on a city map has dimensions of 1.75in x 2.1in. The park in real life is 1,500 times larger than the drawing. What is the perimeter of the actual park?

• 5,512.5 in

• 3,675 in

• 5,250 in

• 11,550 in

The original area of a rectangle is 35 in². If the rectangle is enlarged by a scale factor of 3, what is the new area?

• 105 in²

• 11.6 in²

• 315 in²

• 210 in²

If the area of a square was 16 in² and now it is 256 in², what is the scale factor that was used?

• 4

• 2

• 3

• 12

A rectangular park on a city map has dimensions of 1.75in x 2.1in. The park in real life is 100 times larger than the drawing. What is the area of the actual park?

• 36,750 in²

• 367.5 in²

• 3,675 in²

• 11,550 in²

The area of a rectangle was 1125 sq cm, and was reduced to 45 sq cm. What was the scale factor used to reduce the shape?

• 25

• 5