Flashcard 12 - Geometry Flashcard Set for the Math Basics

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The correct answer is:

Add the areas of all faces.


Explanation:

There are formulas for surface areas, but they simply aren’t worth memorizing. The faces of prisms and pyramids are polygons. Know the formulas for areas of simple polygons, and you’ll be fine.

\[A_\text{rectangle}=b\cdot h, \\ A_\text{triangle}= \frac{1}{2}b \cdot h \\ A_\text {square} = s^2 \\ etc…\]

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