2007-01-02 03:29:57 · 8 answers · asked by lisa 1 in Science & Mathematics ➔ Mathematics
Obviously, it is important for making calculations regarding circles. However, it pops up all over in mathematics: trigonometry, calculus, statistics, complex analysis.
To see how deep it goes, consider the Euler Identity:
e^(sqrt(-1)*pi)= -1
This equation ties together real numbers, imaginary numbers, and the transcendental irrational numbers "e" and "pi".
http://en.wikipedia.org/wiki/Euler%27s_identity
2007-01-02 03:50:23 · answer #1 · answered by Jerry P 6 · 0⤊ 0⤋
It is used in computing circular data. If you know the diameter of a circle, you can it times pi to get the circumference. You also use pi to determine the area of a circle. It has many uses in geometry and mathematics.
2007-01-02 11:32:21 · answer #2 · answered by Surveyor 5 · 0⤊ 0⤋
pi is not 3.14. It is a recurring number. Anyway pi is circumference over diameter. It will work for any circle.
2007-01-02 11:47:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
You use it for formulas with circle because the diameter goes around a circle pi(3.14) times.
2007-01-02 11:31:45 · answer #4 · answered by luv_ya 2 · 0⤊ 1⤋
It relates the diameter of a circle to its circumference.
2007-01-02 11:32:07 · answer #5 · answered by Matt 3 · 0⤊ 0⤋
It shows up all over the place in mathematics.
2007-01-02 11:33:07 · answer #6 · answered by bkkbrad 2 · 0⤊ 0⤋
It helps your contractor estimate the circular driveway you ordered.
2007-01-02 11:33:26 · answer #7 · answered by T K 2 · 0⤊ 0⤋
It is part of every calculation involving curved surface
2007-01-02 11:32:25 · answer #8 · answered by Sheen 4 · 0⤊ 0⤋