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NMC 1989 Problem 2

  • Answer

Three sides of a tetrahedron are right-angled triangles having the right angle at their common vertex. The areas of these sides are A,BA, B, and CC. Find the total surface area of the tetrahedron.

Dataset text NuminaMath olympiads. Quoted with source.

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A+B+C+\sqrt{A^{2}+B^{2}+C^{2}}

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