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MathNet 2015-part-03 — 191 problems (EN–VI) Question 132

Math Olympiad Vault · MathNet 2015-part-03 — 191 problems (EN–VI)

Question 132

Given the triangle $ABC$ right-angled at $A$, we construct on the hypotenuse the square $BCDE$ (with $D, E$ on the opposite side of $BC$ from $A$). Knowing that the areas of the triangles $ABE$ and $ACD$ are $6~\mathrm{m}^2$ and $27~\mathrm{m}^2$ respectively, what is the area of the triangle $ABC$?

(A) $3 \sqrt{2}~\mathrm{m}^2$
(B) $6~\mathrm{m}^2$
(C) $12~\mathrm{m}^2$
(D) $9 \sqrt{2}~\mathrm{m}^2$
(E) $18~\mathrm{m}^2$