HMMT 2005 E3
- General 1
- Answer
Let be a regular tetrahedron with side length 2 . The plane parallel to edges and and lying halfway between them cuts into two pieces. Find the surface area of one of these pieces.
Dataset text NuminaMath olympiads. Quoted with source.
Also HMMT 2005 G2.
Show the answer
1+2 \sqrt{3}
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