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How to calculate area, diameter and circumference of circle in PHP



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asked Feb 18, 2016 by avibootz
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1 Answer

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$radius = 3;
$PI = 3.14;
  
$area = $PI * $radius * $radius;
echo "Area = " . $area . "<br />";
  
$diameter = 2 * $radius;
echo "Diameter = " . $diameter . "<br />";
  
$circumference = 2 * $PI * $radius;
echo "Circumference = " . $circumference . "<br />";
  
/*
run:
   
Area = 28.26
Diameter = 6
Circumference = 18.84
   
*/

 



answered Feb 18, 2016 by avibootz

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