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IKMC 2020 - Grades 11-12 - Set 2 - Self-study Question 23

IKMC · IKMC 2020 - Grades 11-12 - Set 2 - Self-study

Question 23

One side of a rectangular garden is increased by 20% and the other by 50%. The new garden is a square, as shown. The shaded region between the square’s diagonal and the line containing the original rectangle’s diagonal has area 30 m². What was the area of the original garden?

Question illustration
  1. 60 m²
  2. 65 m²
  3. 70 m²
  4. 75 m²
  5. 80 m²