Ratio of Perimeters and Areas

When going from the ratio of perimeters to the ratio of areas, you...

• square it.

• cube it.

• square root it.

• cube root it.

If the ratio of perimeters is 2:9, then the ratio of areas is...

• 2:9

• 4:81

• 4:18

• 8:729

The linear scale factor is the same as...

(select all that apply)

• the ratio of areas

• the ratio of volumes

• the ratio of sides

• the ratio of perimeters

• the ratio of similarity

The ratio of perimeters is the same as...

(select all that apply)

• the ratio of areas

• the ratio of volumes

• the ratio of sides

• the ratio of similarity

• the linear scale factor

The two figures are similar. Find the ratios (red to blue) of the perimeters and of the areas. 

• Perimeter: 11/6
  Area: 36/121

• Perimeter: 11/6
  Area: 121/36

• Perimeter: 4/11
  Area: 144/25

• Perimeter: 4/11
  Area: 64/16

The two ratios are similar. Find the ratios (red to blue) of the perimeters and of the areas. 

• Perimeter: 4/6 
  Area: 25/64

• Perimeter: 4/16
  Area: 8/16

• Perimeter: 5/8
  Area: 25/64

• Perimeter: 14/9
  Area: 121/64
  Area:

Find the ratios (red to blue) of the perimeter and the area.

• Perimeter : 4/7
  Area: 16/49

• Perimeter: 15/8
  Area: 30/16

• Perimeter: 40/4
  Area: 19/15

• Perimeter: 18/40
  Area: 15/30

Find the ratios (red to blue) of the perimeter and the area.

• Perimeter: 20/54
  Area: 58/485
  Area:

• Perimeter: 3/4
  Area: 9/16

• Perimeter: 58/299
  Area: 57/383

• Perimeter: 5/10
  Area: 19/46

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

• 9/14

• 14/9

• 196/81

• 81/196

The scale factor of two similar figures is 4 : 5. What is the ratio of their perimeters?

• 4 : 5

• 16 : 25

• 64 : 125

• 8 : 10