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2012 AMC 12B Question 10

AMC12 · 2012 AMC 12B

Question 10

What is the area of the polygon whose vertices are the points of intersection of the curves $x^2 + y^2 = 25$ and $(x - 4)^2 + 9y^2 = 81?$
  1. $24$
  2. $27$
  3. $36$
  4. $37.5$
  5. $42$