Math
Area Calculator
Calculate the area of rectangles, circles, triangles, squares, and parallelograms.
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Frequently Asked Questions
How do I calculate the area of a circle?
Area = π × radius². For example, a circle with radius 5 has area = 3.14159 × 25 = 78.54 square units.
What is area?
Area is the amount of 2D space enclosed by a shape, measured in square units (cm², m², ft², etc.).