The area of a circle is the amount of two-dimensional space enclosed by its circumference. The area of a circle is calculated using the formula: 𝐴 = 𝜋𝑟² The area of a sector is the two-dimensional ...

AO and OC are both radii of the circle. Length AO = Length OC Draw the line OB. It creates two triangles OCB and OAB. These share the length OB.