The ratio of the circumference of a circle to its diameter is a constant, irrespective of the actual measurements. This ratio is called pi and is 3.1415...
Pi is a constant because it is the ratio of the circumference to the diameter of a circle and they are always in the exact same proportion.
In any and all circles, the ratio of the circumference to the diameter is a constant called 'pi' ~ 3.14159 and since a full circle contains 2 pi radians = a constant 360 degrees, then the radian itself is a constant angle ~ 180/3.14159 = 57.3'.
Pi is a mathematical constant because it is the same for every perfect Circle. Pi = Circumference/Diameter of any Circle. It is constant because no matter the size of the circle that ratio always comes out to Pi. Hope they helped :)
Sine (pi) is a constant, so the derivative of sine (pi) is zero.
The digits of pi are not periodic. Pi is an irrational constant, and if its digits were periodic, it could be expressed as a ratio of constant integers, meaning it would be rational.
An absolute constant is a constant which maintains the same value wherever it occurs, such as pi.
a mathimatical term called a unit of hydrometer is what the study of gravity and other measurements
Pi is a constant. It doesn't depend on the size of the circle. Pi is approximately 3.1416.
The constant Pi has no end. It is a number that goes on forever and never repeats!
As far as I know, the constant pi is never used in the plural form.