A Vinnie’ s Pizzaria pepperoni pie is seen during the Pizza Pie Showdown at the Holiday Inn in downtown Concord on Pi Day, Mar. 14, 2018. Proceeds from the event, hosted by the Concord Monitor and Insider, went to support the Friendly Kitchen. (ELIZABETH FRANTZ / Monitor staff) Elizabeth Frantz

Veano’s Italian Kitchen serves slices of Greek pizza during the Pizza Pie Showdown at the Holiday Inn in downtown Concord on Pi Day, Mar. 14, 2018. Proceeds from the event, hosted by the Concord Monitor and Insider, went to support the Friendly Kitchen. (ELIZABETH FRANTZ / Monitor staff) Elizabeth Frantz