Q. The 2018 Pi Day is observed on which date?
Answer: March 14
Notes: The Pi Day is observed every year on March 14 (3/14) across the world. It is an annual celebration of the mathematical constant π (pi). Pi represents the ratio of a circle’s circumference to its diameter. It’s an important part of the foundation of mathematics, most importantly geometry, where pi is key to equations calculating the area of a circle, A = πr2, and the volume of a cylinder, V = πr2h.

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