Scale Factor on Perimeter and Area

If the rule (x, y) →(11x,11y) is used to create a shape, how is the area of the new shape affected?

• its 11 times larger

• its 121 times larger

• its 22 times larger

• it stays the same size

If the scale factor is 4, how many times bigger is the area?

• 2 times bigger

• 4 times bigger

• 16 times bigger

• it stays the same size

If the scale factor is 4, how many times bigger is the perimeter?

• 4 times bigger

• 16 times bigger

• 8 times bigger

• it stays the same size

If the perimeter is 8 times bigger, what scale factor was used?

• 64

• 8

• 16

• 4

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

If the area is 100 times bigger, what scale factor was used?

• 10

• 100

• 50

• 200

If the scale factor is 2, how many times bigger is the area?

• 2 times bigger

• 4 times bigger

• 6 times bigger

• the same size

If the area is 36 times bigger, what is the scale factor?

• 6

• 36

• 18

• 64

If the rule is (x, y)→(3x, 3y) is used to create a shape, how is the perimeter of the new shape affected?

• its 3 times larger than the original

• its 9 times larger than the original

• its 6 times larger than the original

• it stays the same size as the original

If the scale factor is 7, how many times bigger is the perimeter?

• 7 times bigger

• 49 times bigger

• 14 times bigger

• its the same size