You're right that there isn't a built-in VBA function for pi, but there are a few ways to get an accurate value for pi in VBA.
One option is to use the constant "4 * Atn(1)" which is a commonly used approximation for pi. This is essentially saying that pi is equal to 4 times the arctangent of 1. Here's an example of how you could use this in a VBA function:
Formula:
Function CalculateArea(radius As Double) As Double
Dim piValue As Double
piValue = 4 * Atn(1)
CalculateArea = piValue * radius * radius
End Function
Another option is to use the same
pi() worksheet function that you mentioned in your question, but call it using the
Application.WorksheetFunction object. Here's an example:
Formula:
Function CalculateArea(radius As Double) As Double
Dim piValue As Double
piValue = Application.WorksheetFunction.Pi()
CalculateArea = piValue * radius * radius
End Function
Both of these options should give you an accurate value for pi in your VBA function.
- Use the constant "4 * Atn(1)" to get an approximation for pi.
- Call the pi() worksheet function using the Application.WorksheetFunction object.