Area is the measure of the space inside a two-dimensional shape, calculated using specific formulas based on the shape's dimensions.

Common Shapes

For rectangles and squares, multiply length by width: A=l×wA=l\times wA=l×w. Squares use side length squared: A=s2A=s^2A=s2.

Triangles require base times height divided by 2: A=12bhA=\frac{1}{2}bhA=21​bh.

Circles and Others

Circles use pi times radius squared: A=πr2A=\pi r^2A=πr2. Parallelograms multiply base by height: A=bhA=bhA=bh.