Scale Factor Perimeter and Area

The area of the larger square is __________ times larger than the area of the smaller square.

• 1/2

• 1

• 2

• 4

Both the side lengths and perimeter are 3 times larger in the bigger rectangle.

• True

• False

What is one way to determine how much the area would increase using a scale factor of 3?

• take the scale factor and square it to get 3x3=9

• add all of the sides together then multiply by 3

• multiply the area of the smaller rectangle by 3

Which of the statements correctly compares the perimeter of the 2 triangles?

• 12x2=24

• 5x2=10

• 12x3=36

When creating a scale drawing of a house, which scale would create the larger drawing?

• 1:2

• 1:3

• 1:4

• 1:5

The figures are similar. What is the ratio of their perimeters?

• 18/24

• 3/4

• 1/2

• 36/24

Find the ratio (red to blue) of the perimeter.

• 11/6

• 6/11

• 121/36

• 36/121

Find the ratio (red to blue) of the area.

• 11/6

• 6/11

• 121/36

• 36/121

Find the ratio (red to blue) of the perimeter.

• 9/14

• 14/9

• 196/81

• 81/196

Find the ratio (red to blue) of the area.

• 9/14

• 14/9

• 196/81

• 81/196