Posted by **JOY** on Tuesday, May 24, 2011 at 11:46am.

Find the surface area of a tetrahedron that has edges the length of 12 centimeters.

- geometry -
**Ms. Sue**, Tuesday, May 24, 2011 at 11:57am
This site has this and many other formulas.

http://www.mathwords.com/s/surface_area.htm

- geometry -
**Evan **, Tuesday, May 24, 2011 at 4:22pm
the surface area of a rectangular prism is 190 square inches, the length is 10 inches, and the width is 3 inches. Find the height

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