Now for the important part. Today, as you may know, is Pi Day. Why today? Because it’s March 14—yes, 3/14—and 3.14 is the value of pi to two decimals. Of course, the actual number continues to an ...

I used to think Pi Day was a sham. If we’re being honest, most of us are ready to forget about the true value of pi once we’ve finished taking the SATs in high school. On March 14 each year, rather ...

You might not have calculated the area of a circle recently, but you probably still remember learning in middle school (or thereabouts) that the secret of doing so is using a ratio called pi. And ...

Pi equals the ratio of a circle's circumference to its diameter, or approximately 3.14. Pi is infinite, meaning its exact value is incalculable, but in 2015 Rajveer Meena recited 70,000 decimal places ...