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Happy Pi Day! The number pi, or π, is a ratio equal to the circumference of a circle divided by the circle’s diameter. That comes out to about 3.14159. This is true for circles of all sizes, from pennies to pizzas to planets. Pi is an irrational number. The exact value of pi is impossible to write out because the string of digits after the decimal place goes on forever without repeating. Pi’s value is often rounded to 3.14. That’s why Pi Day is celebrated on March 14, or 3/14. It’s also why one
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Happy Pi Day! The number pi, or π, is a ratio equal to the circumference of a circle divided by the circle’s diameter. That comes out to about 3.14159. This is true for circles of all sizes, from pennies to pizzas to planets. Pi is an irrational number. The exact value of pi is impossible to write out because the string of digits after the decimal place goes on forever without repeating. Pi’s value is often rounded to 3.14. That’s why Pi Day is celebrated on March 14, or 3/14. It’s also why one
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Pi (π) is a mathematical constant that represents the ratio of the circumference of a circle to its diameter. It is approximately equal to 3.14159, but it is an irrational number, meaning it has an infinite and non-repeating decimal expansion. Pi is one of the most famous and important mathematical constants, and it has been studied and used for thousands of years. The ancient Egyptians and Babylonians approximated pi to be about 3, but the Greek mathematician Archimedes was the first to rigorou
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