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- 1. Multiple Choice
Two similar cones have a scale factor of 8/27. What is the ratio of their volumes?
2/3
64/729
512/19683
8/27
- 2. Multiple Choice
What is the scale factor of the side lengths of the figure on the left to the figure on the right.
3/1
3240/120
27/1
9/1
- 3. Multiple ChoiceTwo spheres have a scale factor ratio of 1:3. The smaller sphere has a surface area of 16 ft2. Find the surface area of the larger sphere.48 ft2144 ft2432 ft232 ft2
- 4. Multiple Choice
The volume of a prism is 1000 cubic centimeters. A similar prism has a volume of 27 cubic centimeters. What is the ratio of their surface areas?
100:9
10:3
500:13.5
100:2.7
- 5. Multiple Choice
The ratio of the volume of two spheres is 8:27. What is the ratio of their radii?
2:3
4:9
3:4
64:729
- 6. Multiple ChoiceAre the two figures similar?
(If yes, what is the similarity ratio?)Yes; 3Yes; 3/10Yes; 3/5No - 7. Multiple ChoiceAre the two figures similar?
(If yes, what is the similarity ratio?)Yes; 5Yes; 9:6Yes; 1/3No - 8. Multiple ChoiceIf all the edges of a prism are multiplied by 5, then the volume of the prism will be multiplied by ___.52550125
- 9. Multiple ChoiceSuppose the dimensions of a triangle with a perimeter of 18 units are doubled. Find the perimeter of the new triangle.183672288
- 10. Multiple Choice
The height (but not the base) of a triangle is doubled. Describe the effect on the area.
The area is doubled
The area is quadrupled
The area is halved
- 11. Multiple Choice
Which term describes matching sides of similar figures?
Corresponding Sides
Corresponding Angles
Scale Factor
- 12. Multiple ChoiceThe pair of figures is similar. Find the missing side.x = 12x = 3x = 40x = 4
- 13. Multiple Choice
Find the ratio (blue to red) of the areas.
4/7
7/4
49/16
16/49
- 14. Multiple ChoiceWhat is the ratio of the surface areas from large to small.49/167/442/2410/8
- 15. Multiple Choice
Find the surface area of the larger solid given the information below. (Hint: To find the ratio of SA, you must first find the ratio of sides.)
V = 8m3
V = 27m3
SA = 36 m2
SA = ?
54 m2
81 m2
55 m2
76 m2
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