Thread:Foxalicious/@comment-27617589-20161104205209/@comment-27617589-20161213015420

OH, AND:

to find the circumference of a circle via PI, use the formula C = πD, which means the circumference is to be calculated through multiplication between PI and the diameter of the shape. the diameter is the measurement of the circle's width, whereas the radius is the half of the diameter.

if you are provided with ONLY the radius, then use the formula C = πR2. R for radius, 2 for multiplication and pi for accuracy (I forgot to mention that the longer pi is, the more accurate your answer becomes. however, pi is an infinite number so true accuracy of the answer is therefore unattainable *cries*). first, do R2 (radius x 2) because when you multiply the radius twice (or double it) then you get the diameter. then, get the diameter and multiply PI similar to the formula C = πD I mentioned before. Ta-da!! you have now successfully obtained the circle's circumference using 2 formulas!! (to find diameter / radius via circumference, do the opposite; C = π ÷ R2 or C = π ÷ D)

(I forgot to mention this before, but circumference is the entire length of the circle.)

everything else in PI is a bit more advanced than what I just said above (it's chaos in highschool), but If you somehow managed to understand what I managed to say then good job! you just learnt pi!! :3