Scale Factor with Area and Perimeter

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

• 9/14

• 14/9

• 196/81

• 81/196

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

• 4/7

• 7/4

• 49/16

• 16/49

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

• 4/7

• 7/4

• 49/16

• 16/49

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

• 64/25

• 25/64

• 5/8

• 8/5

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

• 64/25

• 25/64

• 5/8

• 8/5

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

Two hexagons are similar with a scale factor of 4/5. If the area of the larger hexagon is 20, what is the area of the smaller hexagon?

• 10.24

• 12.8

• 16

• 25

The area of triangle A is 54 and triangle B is 150. What is the scale factor of A to B? 

• 9:25

• 27:75

• 3:5

• 25:9

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

• 18/24

• 3/4

• 1/2

• 36/24

What is the area ratio of the following rectangles?

• 10/7

• 100/49

• 100/36

• 4/36