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AMO 2025 – Secondary 4 (Grade 10) Question 2

AMO · AMO 2025 – Secondary 4 (Grade 10)

Question 2

The transformation $T(x,y)=(2x,y/4)$ is applied to the ellipse $x^2/16+y^2/9=1$. What is the area of the resulting shape?

Question illustration
  1. $6\pi$
  2. $3\pi/2$
  3. $4\pi$
  4. $5\pi$