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How to calculate the area of a circle with constant PI in PHP

1 Answer

0 votes
define("PI", 3.14);
   
$radius = 13.0;
$area = PI * $radius * $radius;
         
echo "Area = " . $area;
    
/*
run: 

Area = 530.66  

*/

 



answered Apr 28, 2016 by avibootz

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