Find the total surface area of the triangular pyramid. each of the faces (sides) has an area of 50.5 square inches.

By definition we have:
 A triangular pyramid (also called tetrahedron) is a polyhedron whose surface is formed by a base that is a triangle and triangular lateral faces that converge in a vertex that is called apex (or apex of the pyramid).
 It will be composed, therefore, by 4 faces, the triangular base and three lateral triangles that converge at the vertex.

 Thus, the surface area is:
 As = 4 * (50.5) = 202 in ^ 2
 
 The total surface area of the triangular pyramid is:
 202 in ^ 2

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