STEP 1 - WRAP RIBBON: Take the ribbon and wrap it around a glass. Mark where the ribbon overlaps itself. Image caption, STEP 2 - CUT CIRCUMFERENCE: Cut the ribbon at the point where it overlaps. You ...

Pi, which indicates the ratio of the length of the circumference to the diameter of the circle, is a type of irrational number that cannot be expressed as a fraction in which both the molecule and the ...