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# is pie a rational or irrational number

From Wikipedia

Irrational number

In mathematics, an irrational number is any real number which cannot be expressed as a fraction a/ b, where a and b are integers, with b non-zero, and is therefore not a rational number. Informally, this means that an irrational number cannot be represented as a simple fraction. Irrational

Question:It is said that pie is irrational but we represent it as 22/7 which is a rational number.

Answers:22/7 is an approximation of pi, not the exact value. The exact value cannot be represented by a fraction, which is why it's called irrational. Any fraction you find that approximates pi will always be slightly off.

Question:is pie/4 a rational number like 1/8...-12 -6 -9 6?

Answers:No it is not. Dividing a pie by four will give you a rational number of pieces of pie However, anyone trying to infringe upon your four pieces of pie without permission will then be considered irrational. =]

Question:Alright,a lot of problems...I finished them already and I want you to help me check if I got them right. And if I'm missing anything(rational,irrational,natural,whole,integer) or put something wrong in it...please explain how to do the problem...thanks. 1. -14:rational;integer 2. 5/7:rational 3. 0.32;rational 4. 3.76;rational 5. square root of 8;irrational 6. 23; rational,natural,whole,integer 7. square root of 100; rational,natural,whole,integer 8. -1.9;rational,integer 9. 0.47892;irrational 10. square root of 96; irrational 11. 2 3/4;rational 12. 9.3999999999......;rational 13. 325;rational,natural,whole,integer 14. 0;rational,natural,whole,integer 15. square root of 12; irrational 16. 26;rational,natural,whole,integer 17. -square root of 17;irrational 18. 13 3/5;rational 19. -2.37888888...;rational,integer 20. square root of 64;rational,natural,whole,integer 21. 5.5555...;rational 22. -12.2; rational 23. 76; rational,natural,whole,integer

Answers:all look good except 8. -1.9;rational,integer is not an integer 9. 0.47892;irrational is rational, fraction of 47892 / 100000 .

Question:.4646464646... And 2.040506... Also, if you could supply a definition of rational and irrational numbers, but not the fraction one, that confused me! I don't understand how you can easily tell numbers like these, because how are you supposed to know if they can be expressed as a ratio between two while numbers?

Answers:If the digits terminate, the number is rational. Example: 1.25 terminates. If the digits repeat infinitely, the number is rational. Example: .4646464646... repeats. (This number as a ratio of whole numbers is 46/99.) If the digits neither terminate nor repeat, the number is irrational. Example: 2.040506... cannot be proven to repeat with the information we have, so we must assume irrational.