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VTMO 2026 - Grade 8 - Semifinal - SET 2 - Self-study Question 13

VTMO · VTMO 2026 - Grade 8 - Semifinal - SET 2 - Self-study

Question 13

In the figure, $\triangle ABC$ is right-angled at $A$ and $\angle ACB=30^\circ$. Triangles $ABE,ACF,BCG$ are equilateral. Given $S_{ABE}+S_{ABC}=12\text{ cm}^2$, find $S_{ACF}+S_{BCG}$.

Question illustration
  1. $28$
  2. $20$
  3. $21$
  4. $25$
  5. $12\sqrt3$