Area and Perimeter Scale Factor

If a shape is dilated by a scale factor of 1/2, what is the resulting perimeter?

• The new perimeter is 1/2 the original

• The new perimeter is 2 times the original

• The new perimeter is 1/4 the original

• The new perimeter is 4 times the original

A rectangle has a base 4 ft and height of 5 feet. If the figure dilated by a scale factor of 2, what will be true about its area?

• The area is doubled.

• The area is multiplied by 4.

• The area stays the same

If the linear scale factor is 4, what is the area scale factor?

• 2

• 8

• 16

• 25

If the linear scale factor is 6, what is the area scale factor?

• 12

• 6

• 36

• 18

If the linear scale factor is 5, what is the perimeter scale factor?

• 100

• 5

• 25

• 10

A figure is dilated by a scale factor of 7. How will the area of the figure be effected?

• It will be 7 times bigger.

• It will be 49 times bigger.

• It will be 7 times smaller.

• It will be 49 times smaller.

A figure has a perimeter of 22 inches. if dilated by a scale factor of 4.5, what will the new perimeter of the new image?

• 26.5

• 44

• 445.5

• 99

• 3.4

• 425

• 85

• 4.25

A figure has an area of 1 inches. if dilated by a scale factor of 57 , what will the new area of the new image?

• 57

• 3249

• It will be 8 times larger as the original.