Scale Factor and ratios

How do you get from the Scale Factor to the Ratio of Areas?

• It is the same

• By squaring it

• By cubing it

• By taking the square root

How do you get from the Scale Factor to the Ratio of Lengths?

• It is the same

• By squaring it

• By cubing it

• By taking the square root

How do you get from the Scale Factor to the Ratio of Volumes?

• It is the same

• By squaring it

• By cubing it

• By taking the square root

Which one of the following items is NOT a length?

• Side length

• Radius

• Height / Altitude

• Volume

• Perimeter

Two similar cubes have a scale factor of 2:5. What is their Ratio of Volumes?

• 2:5

• 4:25

• 6:10

• 8:125

Two similar cylinders have a scale factor of 3:7. What is their Ratio of Areas?

• 3:7

• 6:14

• 9:49

• 27:343

Two similar cones have a Ratio of Volumes of 8:27. What is their Scale Factor

• 8:27

• 6:18

• 4:9

• 2:3

Two similar pyramids have bases of 4 yards and 20 yards, respectively. What is their Scale Factor?

• 1:2

• 1;4

• 1:5

• Cannot be determined

Two similar rectangular prisms have a ratio of areas of 16:25. What is their scale factor?

• 4:5

• 16:25

• 64:125

• 256:625

The radii of two similar spheres are in the ratio of 3:7. What is their Ratio of areas?

• 3:7

• 9:49

• 27:343

• Dunno