The area of a circle is the amount of space enclosed within its circumference. It is calculated by multiplying the square of the radius of the circle by the constant value of pi (π). The formula for calculating the area of a circle is A = πr², where A represents the area and r represents the radius of the circle. The area of a circle is measured in square units, such as square meters (m²) or square inches (in²). The concept of the area of a circle is used in various real-life scenarios, such as calculating the surface area of circular objects like plates, wheels, or discs.

The formula for determining the area of a circle is defined as:

\(A\) \(=\) \(\pi\) \(\cdot\) \(r^2\)

\(A\): the area of the circle

\(r\): the radius of the circle

\(\pi\): A mathematical constant with an infinite decimal tail

The SI unit of area is: \(square \text{ } meter\text{ }(m^2)\)

## Find \(A\)

Use this calculator to determine the area of a circle when the length of its radius is given.

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the radius of the circle

\(r\)

\(meter\)

\(\pi\) : A mathematical constant with an infinite decimal tail