Perimeter and Area with Scale Factor

If the scale factor to get from the small rectangle to the large rectangle is 4 and the perimeter of the small rectangle is 24 units. What is the perimeter of the larger rectangle?

• 112

• 24

• 96

• 32

Triangle PRQ is the pre-image. Triangle SUT is the image. What is the scale factor to get from the small triangle to the large triangle?

• 2

• 1.5

• .67

• 8/12

What is the scale factor used to get from the small rectangle to the large rectangle?

• 4

• .25

• 21

• 5/7

What is the perimeter of the smaller rectangle?

• 12

• 14

• 24

• 10

Using the image, with a scale factor of 2, find the perimeter of the new rectangle.

What is the area of the small triangle PQR?

• 48

• 30

• 24

• 14

If the scale factor to get from the small triangle to the large triangle is 1.5 and the area of the small rectangle is 24 units squared. What is the area of the large rectangle?

• 54

• 48

• 36

• 108

If a triangle is enlarged by a scale factor of 3/2, then which of the following statements about its perimeter will be true?

• The new perimeter will be 3/2 times the old perimeter.

• The new perimeter will be 1/2 of the old perimeter.

• The new perimeter will be 3 times the old perimeter

• The new perimeter will be 4 times the old perimeter

Amanda made a scale drawing of a square garden, which has a side length of 25 feet. She used the scale 2 inches = 5 feet.

What will be the area of the scale drawing?

• 10 in²

• 25 in²

• 100 in²

• 484 in²

How is Figure F reduced to Figure B?

• Multiply each side by 1/2

• Multiply each side by 1/3

• Multiply each side by 1/4

• Multiply each side by 1/5