Circle area If the circle has radius R then the area is π R² A = πR² The area of the circle is equal to pi (π) multiplied by the radius squared. |
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To calculate the area of the circle using the number Pi and the radius of the circle, enter the value of the radius. | |||
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How is the area of the circle calculated? What is the calculation formula? The number π (often written pi) is a mathematical constant whose value is the ratio of the circumference to the diameter of any circle. The decimal representation of π is: π = 3.14159 |
mathematics | |
measurement units |