| Back to the basics |
| A sphere of radius X is inscribed in a regular tetrahedron of arbitrary side length, and a sphere of radius Y is circumscribed about the same tetrahedron. (A tetrahedron is a solid with four congruent equilateral triangle faces.) What is the numerical value of the ratio Y:X? Express your answer in the simplest possible form. |
Problem Moderated by: Sasha |
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