The formula for the area of the circle is 𝑨 = π𝒓². To work out the area of a circle: Find the value of the radius. If the diameter is given, this must be halved. Substitute the value of ...

When working with circles it is important to know the following definitions: The radius (r) of a circle is the distance from the centre to the outside of the circle. The diameter (d) of the circle ...