Dilations Perimeter and Area

• The perimeter of the new rectangle will be the same as the perimeter of the original rectangle.
• The perimeter of the new rectangle will be 2.5 times as large as the perimeter of the original rectangle.
• The perimeter of the new rectangle will be 5 times as large as the perimeter of the original rectangle.

If the shape is dilated by a scale factor 1/2. What is the new area?

• 77

• 38.5

• 12.56

• 9.625

If the shape is dilated by a scale factor of 6. What is the new perimeter?

• 40

• 240

• 60

• 360

If the scale factor is 4, what is the measurement of x?

• 20 m

• 24 m

• 16 m

• 4 m

If a shape is dilated by a scale factor of one-half, what is the resulting perimeter? 

• The same as the perimeter of the preimage

• The new perimeter is bigger than the preimage

• The new perimeter is smaller than the preimage

• The new perimeter is 4 times the original

If a rectangle has an area of 48 cm², what would be the area of   a similar rectangle if the dimensions are doubled?

• 96 cm²

• 192 cm²

• 216 cm²

• 2304 cm²

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

If the shape is dilated by a scale factor of 1/3. What is the new perimeter?

• 12

• 18

• 36

• 9

If the shape is dilated by a scale factor of 2. What is the new area (round to the tenths place)?

• 150.3

• 201.1

• 120.1

• 50.3

What is the area of the shaded region?

• 4 cm²

• 16 cm²

• 8 cm²

• 12 cm²