Grammar
PI(number)
Returns the mathematical constant pi.
Parameter
number
When the number is empty, the function returns the value of pi (3.14); otherwise, the number represents an integer multiple of pi.
The function supports one numerical parameter, which can be defaulted.
Formula
Result
Notes
SIN(PI()/2)
1
The formula for the area of a circle: S=PI()*(r^2), in which S represents the area and R, the radius.
PI(3)
9.42
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