The number of square units needed to cover a region?

The number of square units needed to cover a region is called its area. Area is expressed in square units, such as square centimeters, square meters, square inches, or square feet. To determine the area of a regular shape, such as a rectangle, square, or triangle, there are specific formulas that can be used based on the given dimensions of the shape. For irregular shapes, the area can be estimated using methods such as grids or by dividing the shape into smaller, more manageable components.