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MathNet 2018-part-07 — 177 problems (EN–VI) Question 39

Math Olympiad Vault · MathNet 2018-part-07 — 177 problems (EN–VI)

Question 39

Equilateral triangle $A B C$ has circumcircle $\Omega$. Points $D$ and $E$ are chosen on minor arcs $A B$ and $A C$ of $\Omega$ respectively such that $B C = D E$. Given that triangle $A B E$ has area $3$ and triangle $A C D$ has area $4$, find the area of triangle $A B C$.