Pi was first used by the ancient Babylonians that calculated the area of a circle by using three times the square of its radius. In fact, today's unofficial celebration of everyone's favorite irrational number is a great excuse for companies to offer specials and deals.
If you're dining at a BJ's Restaurant & Brewhouse location on Thursday, you can get a mini one-topping pizza for just $3.14.
Paxti's Pizza with locations in San Francisco, Lafayette. It is also involved in calculating the area of a circle, the volume of a sphere, and many other mathematical formulas you might need in the sciences.
We've compiled a list of the best places to score a deal on a pie this Pi Day, so take a peek and see if there are any being served up near you. Promotion for single slices only; one slice per customer.More news: Johnson & Johnson chalks up another talc loss with $29M mesothelioma verdict
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Bakers Square: $2 off any pie. One per order and in-restaurant only.
Boston Market: Use a coupon to get a free chicken pot pie with purchase of another and a drink good.
For those who don't like pie very much, it also happens to be National Potato Chip Day.
Specifically, CPK is offering slices of key lime pie at the special price of $3.14, on March 14 only.
House of Pies - House of Pies is having a giveaway for free pie for a year. Eight-inch pumpkin, apple, and Dutch apple pies are included in the deal.
Pie Five Pizza - Get an individual signature pizza for $3.14.