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The number pi is a part of every circle's formula because there is a fundamental relationship between the diameter (d), or radius (r), if you prefer, and the circumference (c) of every circle, regardless of its size, and the relationship is expressed in one of two ways: c = pi d c = 2 pi r Both expression say the same thing, and either (both) apply to every circle you can construct in planar space.
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How can pi be used?
Pi (3.141...) is used for circles, and circles only. You use it to find the area and circumfrence.
What is the ratio of PI circles?
In a circle Pi it the ratio of the circumference to the diameter. That is to say, if C is the cirumference and D is the diamter of any circle, we have: Pi=C/D
What does circle have to do with math?
Circle is a shape. We have gotten to know a lot from circles. Because of circles, we get PI, radius, diameter, circumference, and other things. Circles fall into geometry, which is math. We can make many mathematical equations from circles.
What is the circles diameter if the circumference is 31.4?
It is: diameter = 31.4/pi which is about 10 units
When is pi used in maths?
WHEN THE TEACHER TELLS YOU THAT YOU NEED TO USE PI...SORRY THAT'S ALL I CAN ANSWER FOR YOU...LATERZWhen you use chords, diameter, and radii in circles
