Pi Day Madness

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Across
  1. 1. Pi Day is in what month?
  2. 2. computers -- pi as a form of a stress test.
  3. 6. Pi*radius squared is the area of a--
  4. 7. all of the numbers following 3 in pi are--
  5. 10. “ -- the circle”is to measure the diameter of a circle by building a square inside the circle.
  6. 11. Pi*diameter equals--
  7. 14. Pi is an -- number.
  8. 15. the area of a circle is Pi*--
  9. 16. the symbol of pi came from the -- alphabet.
Down
  1. 1. Pi has played a major role in what subject?
  2. 2. Pi is also referred to as the “ -- constant.”
  3. 3. 3.14159... is approximately--
  4. 4. Pi rounded is equal to--
  5. 5. the Greek letter π is called--
  6. 8. Pi contains over a million--
  7. 9. --are used to approximate Pi.
  8. 10. 4*Pi*radius squared is a sphere's--
  9. 12. Albert-- was born on 03.14.1879
  10. 13. 4 divided by 3*Pi radius cubed is a sphere's--
  11. 14. Pi's cotangent is--