Pi Day: Stop & Shop offers pies for $3.14 on Thursday

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March 14 - or 3.14 - is Pi Day, a time set aside to recognize the mathematical symbol that represents the ratio of the circumference of a circle to its diameter, or approximately 3.14159. "Pi is also essential to engineering, making modern construction possible", reports History.

Over the course of Major League Baseball history, there is reason to celebrate Pi Day as well. Pies around the world have rich histories, including key lime pie, which was invented only because a baby died on a transatlantic voyage. When new subscribers sign up for the service they'll be able to add a free dessert to their subscription orders for a full year. A pie baking contest is a less messy, and just as sweet, alternative. In a play on the pie/pi homophone, 3/14 is loaded with pizza deals - even more than National Pizza Day. Guests who order a Homemade Chicken Pot Pie in-restaurant or to go will get a second pie free of charge to bake at home, no coupon necessary.

You must buy one chicken pot pie and a drink to get the free pot pie. Additional details about the offer are available from Plated.

Bojangle's: Ok, so these are rectangular.

March 14 also happens to be the birthday of scientist Albert Einstein, and many enjoy commemorating the special day by eating edible pies like pizza, dessert pies and pot pies. The offer is only valid at participating locations.

Whole Foods: Take $3.14 off large bakery pies at Whole Foods locations Thursday. You will need to this coupon cod, 19PI, in order to redeem it.

Biggby Coffee: The Apple Pie latte is returning and will be $3.14. For non-math heads, that means its an infinite, non-repeating decimal - though it's abbreviated to simply 3.14 in numerical form. All three problems will be released at 8 a.m. ET, March 14.

Cicis is celebrating Pi Day by offering a discounted adult buffet for $3.14 with the purchase of an adult buffet and a large drink.

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