Description |
The Pi function returns a floating point value giving a useful approximation of the value of Pi.
The circumference of a circle Pi * Diameter.
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| Related commands | Cos | | The Cosine of a number | Extended | | The floating point type with the highest capacity and precision | Sin | | The Sine of a number | Tan | | The Tangent of a number |
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Download this web site as a Windows program.
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Example code : Get the area and circumference of a circle | var
myPi : Extended;
diam : Integer;
begin
diam := 10;
 // Show circumference and the area of a circle
 // with diameter - 10 cm
ShowMessage(' Diameter = '+IntToStr(diam));
ShowMessage('Circumference = '+FloatToStr(Pi*diam));
ShowMessage(' Area = '+FloatToStr(Pi*(diam/2)*(diam/2)));
end;
| Show full unit code | Diameter = 10
Circumference = 31.4159265358979
Area = 78.5398163397448 |
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