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Michigan students recite pi, sling pie, as teachers 'pied'

  • Third grade teacher Jonathan Segerstron, is seen after getting pied in front of the student body at the Hamtramck Academy Tuesday, March 14, 2017, in Hamtramck, Mich. Students at the school recited pi and celebrated pi by throwing a pie in the face of their favorite teacher. Hamtramck Academy is a free public charter school that serves students in kindergarten through eighth grade. (AP Photo/Carlos Osorio)

    Third grade teacher Jonathan Segerstron, is seen after getting pied in front of the student body at the Hamtramck Academy Tuesday, March 14, 2017, in Hamtramck, Mich. Students at the school recited pi and celebrated pi by throwing a pie in the face of their favorite teacher. Hamtramck Academy is a free public charter school that serves students in kindergarten through eighth grade. (AP Photo/Carlos Osorio)  (The Associated Press)

  • First grade teacher Kelly McCallister, is pied by a student in front of the student body at the Hamtramck Academy Tuesday, March 14, 2017, in Hamtramck, Mich. Students at the school recited pi and celebrated pi by throwing a pie in the face of their favorite teacher. Hamtramck Academy is a free public charter school that serves students in kindergarten through eighth grade. (AP Photo/Carlos Osorio)

    First grade teacher Kelly McCallister, is pied by a student in front of the student body at the Hamtramck Academy Tuesday, March 14, 2017, in Hamtramck, Mich. Students at the school recited pi and celebrated pi by throwing a pie in the face of their favorite teacher. Hamtramck Academy is a free public charter school that serves students in kindergarten through eighth grade. (AP Photo/Carlos Osorio)  (The Associated Press)

  • Dhetee Deb recites pi from memory in front of the student body at the Hamtramck Academy Tuesday, March 14, 2017, in Hamtramck, Mich. Students at the school recited pi and celebrated pi by throwing a pie in the face of their favorite teacher. Math teacher Alex Felton was one of those who got "pied." She says "even though it's whipped cream, you smell vanilla for the next two days." Hamtramck Academy is a free public charter school that serves students in kindergarten through eighth grade. (AP Photo/Carlos Osorio)

    Dhetee Deb recites pi from memory in front of the student body at the Hamtramck Academy Tuesday, March 14, 2017, in Hamtramck, Mich. Students at the school recited pi and celebrated pi by throwing a pie in the face of their favorite teacher. Math teacher Alex Felton was one of those who got "pied." She says "even though it's whipped cream, you smell vanilla for the next two days." Hamtramck Academy is a free public charter school that serves students in kindergarten through eighth grade. (AP Photo/Carlos Osorio)  (The Associated Press)

Students at a Detroit-area school celebrated pi by throwing a pie in the face of their favorite teacher.

Tuesday is March 14, or 3.14, which is the first three digits of pi. The infinitely long non-repeating number represents the ratio of a circle's circumference to its diameter and is one of the most widely known mathematical constants.

Hamtramck Academy students marked Pi Day by tossing pies at the school's teachers and administrators.

Math teacher Alex Felton was one of the faculty members who got "pied." She said "even though it's whipped cream, you smell vanilla for the next two days."

Felton also oversaw a competition in which seven student contestants recited pi from memory in front of the student body — the winner reciting the number to 289 digits.