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Posted by **Lloini** on Sunday, July 14, 2013 at 7:32am.

- GEOMETRY (SA oftriangular pyramid) -
**MathMate**, Sunday, July 14, 2013 at 8:41amLateral surface area

=perimeter of base * apothem /2

=3b*s/2

(for a regular pyramid with a triangular base)

Area of triangular base with side b

=(√3)*b/2*(b/2)

=(√3)b²/4

- GEOMETRY (SA oftriangular pyramid) -
**Anonymous**, Sunday, July 14, 2013 at 10:05amWhat is apothem ?

- GEOMETRY (SA oftriangular pyramid) -
**Anonymous**, Sunday, July 14, 2013 at 10:15amwhy did you not include the height ?

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