Scale Factor Area Perimeter

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.

• It will be 8 times larger as the original.

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

A figure has an area of 5 inches. if dilated by a scale factor of 0.2 , what will the new area of the new image?

• 1

• 0.2

• 100

• 2

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

Calculate the value of the scale factor between the 2 triangles

• 2.5

• 3

• 3.5

• 4

What is the scale factor if the triangle on the left is the original?

• 2

• 3/2

• 2/3

• 1/2

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

If the scale factor is greater than one, the new figure will be

• reduction

• enlargement

• scale

• not proportional