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 ...
Today is national Pi Day. (Yes, that’s Pi without an “e.”) It’s a mathematical constant used to calculate the circumference of a circle. Here are slightly more than seven things you might not know ...
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