Discussion
Total surface area of pyramid is equal to
Answer: A
The total surface area of any solid is the sum of the areas of every exposed face.
For a pyramid that means the base plus all the triangular lateral faces:
\[ \text{TSA} = \text{base area} + \text{lateral surface area} \]
The base area alone is only one part of it, and the slant edge is a length, not an area - a total surface area must have units of length squared.
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