Key Idea: Area

Area measures the amount of two-dimensional space a shape covers.
It is generally calculated by multiplying two dimensions (length × width, base × height, etc.) depending on the shape.

General Rule:

Area = dimension(1) × dimension(2)​

(Use the reference sheet for shape-specific formulas.)

Why this matters for the SAT:

Many SAT geometry problems test your ability to calculate area. Knowing the basic principle of multiplying two dimensions and having the formulas ready from the reference sheet speeds up problem-solving.