Geometry

How to Calculate Area of Any Shape

By SC Editorial 2026-06-02 8 min read

Area measures the space inside a two-dimensional shape. Different shapes require different formulas, but the concept remains the same: counting square units covered.

Rectangle and Square

Area = length * width. A 5 by 8 rectangle covers 40 square units.

Circle

Area = pi * r^2. Radius 4 gives area about 50.27. Use the Circle Calculator.

Triangle

Area = 0.5 * b * h. The Area Calculator supports multiple shapes in one tool.

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