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The value of pi is constant. It is calculated by dividing the circumference of a circle by its diameter. As the circle's circumference grows, the diameter grows at the same rate, proportionally. This means that the circumference divided by the diameter (if measured precisely) will always yield pi. If it does not, it is not a perfect circle. The ratio between the circumference and the diameter of a circle will always stay the same, no matter how you change the size of the circle.
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What is an absolute constant?
An absolute constant is a constant which maintains the same value wherever it occurs, such as pi.
If you have measured both the circumference and diameter in inches instead of centimetre would it affect the value of pi?
no, pi is a unitless numerical constant
How do you arrive at pi?
The value of Pi is a constant, irrational, unending number. It is the result of dividing the circumference of a circle by its diameter. Reciting from memory, its value to fourteen decimal places is 3.14159265358979
Is pi different for every circle?
No, because the value of pi remains the same for any circle.
How value of c is calculated in an RC filter for a given value of r?
Time constant = R C C = time constant/R R = time constant/C When used as a filter, Cutoff frequency = 1 / (2 pi) R C R = 1 / (2 pi) (cutoff frequency) ( C ) C = 1 / (2 pi) (cutoff frequency) ( R )
