Enlargements and scale factors

1. 1.
   Two triangles are similar. One has sides 3, 5 and 11. The side matching 3 on the other triangle is 6. What is the side matching 11?
2. 2.
   A shape is enlarged by a scale factor of 5. A side of 5 cm becomes how many cm?
3. 3.
   A shape is enlarged by a scale factor of 3. A side of 4 cm becomes how many cm?
4. 4.
   A shape is enlarged by a scale factor of 3. A side of 10 cm becomes how many cm?
5. 5.
   A rectangle 12 cm by 5 cm is enlarged to 36 cm by 15 cm. What is the scale factor?
6. 6.
   A shape is enlarged by a scale factor of 2.5. A side of 5 cm becomes how many cm?
7. 7.
   A rectangle 6 cm by 11 cm is enlarged to 15 cm by 27.5 cm. What is the scale factor?
8. 8.
   A shape is enlarged by a scale factor of 2. A side of 6 cm becomes how many cm?
9. 9.
   Two triangles are similar. One has sides 2, 3 and 8. The side matching 2 on the other triangle is 10. What is the side matching 8?
10. 10.
    A shape is enlarged by a scale factor of 2.5. A side of 6 cm becomes how many cm?
11. 11.
    A rectangle 11 cm by 12 cm is enlarged to 33 cm by 36 cm. What is the scale factor?
12. 12.
    A rectangle 7 cm by 3 cm is enlarged to 10.5 cm by 4.5 cm. What is the scale factor?
13. 13.
    A shape is enlarged by a scale factor of 3. A side of 2 cm becomes how many cm?
14. 14.
    Two triangles are similar. One has sides 7, 3 and 6. The side matching 7 on the other triangle is 21. What is the side matching 6?
15. 15.
    A shape is enlarged by a scale factor of 2.5. A side of 4 cm becomes how many cm?
16. 16.
    A shape is enlarged by a scale factor of 2. A side of 11 cm becomes how many cm?
17. 17.
    A rectangle 2 cm by 3 cm is enlarged to 4 cm by 6 cm. What is the scale factor?
18. 18.
    A shape is enlarged by a scale factor of 3. A side of 5 cm becomes how many cm?
19. 19.
    Two triangles are similar. One has sides 2, 3 and 6. The side matching 2 on the other triangle is 10. What is the side matching 6?
20. 20.
    A shape is enlarged by a scale factor of 2. A side of 3 cm becomes how many cm?

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