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What is the formula for finding the area of a tetrahedron? 

tertre  Feb 6, 2018
edited by tertre  Feb 6, 2018
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"Area" is an ambiguous term when referring to three-dimensional shapes. "Area" could refer to the following:

 

  • Surface Area
  • Area of a Face

For a regular tetrahedron, the surface area is as follows:

 

\(SA=a\sqrt{3}\)

 

The area of a face for a regular tetrahedron is as follows:

 

\(A_{\text{face}}=\frac{a^2\sqrt{3}}{4}\)

 

In both cases, "a" represents the length from one vertex to another.

TheXSquaredFactor  Feb 6, 2018

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