Math & Trig
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=PI()
Returns the number 3.14159265358979, the mathematical constant pi, accurate to 15 digits.
Applies To:
Excel for Microsoft 365Excel for Microsoft 365 for MacExcel 2024Excel 2024 for MacExcel 2021Excel 2021 for MacExcel 2019Excel 2016
=PI()
Hover argument names in the table for details.
Output typeNumber
Popularity15 / 100
VolatileNo
Dynamic ArrayNo
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◧ Arguments
No arguments.
▣ Examples
▦ Data
| Cell | Value |
|---|---|
A2 |
Radius |
A3 |
3 |
A4 |
Radius |
A5 |
3 |
Returns pi.
=PI()
Result:
3.141592654
Returns pi divided by 2.
=PI()/2
Result:
1.570796327
Area of a circle with the radius described in A3.
=PI()*(A3^2)
Result:
28.27433388
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