A regular tetrahedron has side length sss. What is its volume?
s362\frac{s^3}{6\sqrt{2}}62s3
s3122\frac{s^3}{12\sqrt{2}}122s3
2s312\frac{\sqrt{2}s^3}{12}122s3
3s34\frac{\sqrt{3}s^3}{4}43s3