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How area changes when a figure is scaled

Year 7 maths · Fieldbook Learning

Name ______________________ Date __________

Area changes by the square of the scale factor.

  1. A rectangle has an area of 9 cm². Each side is multiplied by 3. What is the new area in cm²?
  2. A rectangle has an area of 25 cm². Each side is multiplied by 2. What is the new area in cm²?
  3. A rectangle has an area of 20 cm². Each side is multiplied by 2. What is the new area in cm²?
  4. A rectangle has an area of 18 cm². Each side is multiplied by 3. What is the new area in cm²?
  5. A rectangle has an area of 17 cm². Each side is multiplied by 6. What is the new area in cm²?
  6. A rectangle has an area of 8 cm². Each side is multiplied by 3. What is the new area in cm²?
  7. A rectangle has an area of 22 cm². Each side is multiplied by 3. What is the new area in cm²?
  8. A rectangle has an area of 38 cm². Each side is multiplied by 5. What is the new area in cm²?
  9. A rectangle has an area of 10 cm². Each side is multiplied by 5. What is the new area in cm²?
  10. A rectangle has an area of 70 cm². Each side is multiplied by 2. What is the new area in cm²?
  11. A rectangle has an area of 56 cm². Each side is multiplied by 6. What is the new area in cm²?
  12. A rectangle has an area of 11 cm². Each side is multiplied by 4. What is the new area in cm²?
  13. A rectangle has an area of 36 cm². Each side is multiplied by 7. What is the new area in cm²?
  14. A rectangle has an area of 20 cm². Each side is multiplied by 7. What is the new area in cm²?
  15. A rectangle has an area of 90 cm². Each side is multiplied by 4. What is the new area in cm²?
  16. A rectangle has an area of 65 cm². Each side is multiplied by 8. What is the new area in cm²?
  17. A rectangle has an area of 182 cm². Each side is multiplied by 10. What is the new area in cm²?
  18. A rectangle has an area of 193 cm². Each side is multiplied by 5. What is the new area in cm²?
  19. A rectangle has an area of 98 cm². Each side is multiplied by 10. What is the new area in cm²?
  20. A rectangle has an area of 85 cm². Each side is multiplied by 2. What is the new area in cm²?
More free practice: fieldbooklearning.com/au/practice/year-7/how-area-changes-when-a-figure-is-scaled/

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Answer key: How area changes when a figure is scaled

  1. 81
  2. 100
  3. 80
  4. 162
  5. 612
  6. 72
  7. 198
  8. 950
  9. 250
  10. 280
  11. 2016
  12. 176
  13. 1764
  14. 980
  15. 1440
  16. 4160
  17. 18200
  18. 4825
  19. 9800
  20. 340