3v4l.org

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<?php $a = 4.4; $b = 2.2; $c = sqrt(pow(2.2+ sqrt(19.36-4.84),2) + pow(2.2,2)); $s = ($a + $b + $c) / 2; $area = sqrt($s*($s-$a)*($s-$a)*($s-$c)); echo $area;

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48.45 ms | 402 KiB | 5 Q