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PI function: Description, Usage, Syntax, Examples and Explanation

Example of PI function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula Description Result
=PI() Returns pi. 3.141592654
=PI()/2 Returns pi divided by 2. 1.570796327
=PI()*(A3^2) Area of a circle with the radius described in A3. 28.27433388

What is PI function in Excel?

PI function is one of the Math and Trig functions in Microsoft Excel that returns the number 3.14159265358979, the mathematical constant pi, accurate to 15 digits.

Syntax of PI function


The PI function syntax has no arguments:

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