👉 In geometry, a "perradius" is a distance measurement used in trigonometry and other branches of mathematics. It is often denoted by the symbol r. The perimeter of a shape is defined as the total length of its sides. For example, if you have a rectangle with two pairs of opposite sides equal in length, then its perimeter would be the sum of the lengths of all four sides, which can be calculated using the formula:
Perimeter = 2
(length of