**Problem of the Week-3: Regular Tetrahedron**

A regular tetrahedron is made up of 4 equilateral triangles, any three of which meet at a vertex. If a regular tetrahedron has edges that are 36 units in length, what is the altitude of the tetrahedron? Give your answer in the form and justify it.

Posted: 9-24-07

Submit your answers (by e-mail or hard copy) before 4 pm on 10-5-07 to Noah Aydin.

Mathematics Dept.