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Line 17: ==Formulae== The following [[formula\|formulae]] (the [[volume]] and [[surface area]]) can be used if all edges ("a") are the same length.<ref>[[Stephen Wolfram]], "[http://www.wolframalpha.com/input/?i=Elongated+triangular+pyramid Elongated triangular pyramid]" from [[Wolfram Alpha]]. ~~Retreived~~Retrieved July 21, 2010.</ref> <math>V=(\frac{1}{12}(\sqrt{2}+3\sqrt{3}))a\approx0.550864...a</math>

Elongated triangular pyramid: Difference between revisions