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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

Science News Explores. . 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 ...

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Pi Day Celebration

Guide to Celebrating Pi (π) Day | Exploratorium

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Pi Day is celebrated on March 14 (3/14) around the world. Pi (Greek letter “π”) is the symbol used in math represent a constant — the ratio of the circumference of a circle to its diameter — which is approximately 3.14159. Fifth-grader Liberty Sprain at Coulee Montessori can recite 50 digits of Pi in the correct order from memory because of a song she wrote. Happy Pi Day! | School District of La Crosse

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