Today is Pi Day for 2026, the universal celebration of an amazing, mysterious, and irrational mathematical constant. What's that, you say? Why do we celebrate something that shows up in some of the ...

One of my favorite holidays is Pi Day. On March 14, people who love the math constant called pi celebrate by eating the other kind of pie. Like apple pie, pumpkin pie and even pizza pie. I talked ...

Beth Py-Lieberman | Author, The Object at Hand: Intriguing and Inspiring Stories from the Smithsonian Collections Every year, the celebration of Pi Day (March 14 is 3.14) grows more ambitious. Math ...

The circumference of a circle is the distance around the shape. The ability to round a number to a number of decimal places or to a number of significant figures means that answers can be written to ...

So you have a circle. What is the area of that circle? Surely everyone remembers that the area of a circle is: Where Pi (π) is of course the number and r is the radius of the circle. Where does this ...

Happy Pi Day, the annual celebration of this incredible, mysterious, and irrational mathematical constant. Okay, so Pi — most commonly written as the Greek symbol π — is an essential mathematical ...

Add Yahoo as a preferred source to see more of our stories on Google. Circle the date! Today is Pi Day for 2026! Today is Pi Day for 2026, the universal celebration of an amazing, mysterious, and ...