👉 The brief math explanation is that this involves calculating the area of a circle using its radius. The formula is A = πr², where A is the area and r is the radius of the circle. For instance, if a circle has a radius of 5 units, its area would be π
(5)² = 25π square units. This formula is derived from the concept of integrating the infinitesimal areas of concentric rings that make up the circle, providing a precise way to measure its area based on its radius.