Ratios of Areas and Perimeter

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

The ratio of the figures is 8:5. Find the missing measure. 

• x = 25.6

• x = 25

• x = 43

• x = 23

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

• square it.

• cube it.

• square root it.

• cube root it.

A rectangle has a length of x inches and a width of y inches, where x and y are integers. If x/y=5/8, which of the following could be the perimeter, in inches, of the rectangle?

• 52

• 65

• 78

• 80

What is the area ratio of the following rectangles?

• 10/7

• 100/49

• 100/36

• 4/36

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

The pair of figures to the right are similar. What is the ratio of the perimeters and the ratio of the​ areas?

• The ratio of the areas is 16/100.

• The ratio of the perimeters is 2/5.

• The ratio of the areas is 4/25.

• The ratio of the perimeters is 4/10.

The figures below are similar. The labeled sides are corresponding.

What is the perimeter of the smaller hexagon?

• 5 cm

• 1/6 cm

• 6 cm

• not enough info