Happy Pi Day!

Hello mathematicians, puzzlers, and other curious people!

This is a rerun from last year. I meant to do something new, examining the connection between the two most familiar formulas that use (the two circle formulas, and , the similarities between the two, both containing an r and a and a 2 being both the bane of junior high kids\’ existence and a mathematical inevitability).

Unfortunately, this 2020 Extended Release we\’re calling 2021 didn\’t let me get ahead on that. Fortunately in other ways but not for this, on Wednesday I got my second COVID shot, and spent the remainder of the week in varying degrees of Second Shot Crud. (Still sucks less than catching corona. Talk to your medicreature or local health department about how to get jabbed if/when your group is up.)

I\’ve got my eye on some other upcoming dates, like July 22 (22/7 in most of the world), so you won\’t have to wait a whole year to get new -related articles. Until then…

Calc You Later!

In this video, I stick up for the formula as meaningful in its own right instead of just a convenient simplification.

If you\’re interested in squares, you might also like this number theory post on square numbers.

Update: Just a quick addition here: I found 2019\’s video in the vault and since it\’s a very different look at pi I\’ll post it here too in case anyone\’s interested.