WHAT DOES IT MEANT BY PI IS A COMPARATIVE MEASURE OF A RIM OF A ROUND TO A DIAMETER?

What i wish to assimilate is what does comparative magnitude mean here, and how does pi uncover the comparative magnitude of the rim to the hole someone explain? �? (sometimes created pi) is the mathematical consistent whose value is the comparative magnitude of any circle's rim to its hole in Euclidean space; this is the same value as the comparative magnitude of the circle's area to the