Royal Perks members can get a free slice of Hershey’s pie on Pi Day when they spend more than $3.14.

Pi Day occurs on March 14, because the date is written as 3.14 in the United States. Pi is the ratio of the circumference of a circle to its diameter, or approximately 3.14 (its exact value is ...

LAS VEGAS (KLAS) – Years ago, the infinite decimal 3.14 or its Greek symbol pi was mostly known to math and science geeks, ...