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@ 2013-10-21T14:28:22Z

<?php
class Math {
	const pi = 3.14;
}

class CircleMath extends Math {

	public static function calculateArea($radio) {
		return self::pi * pow($radio, 2);
    }
}

$radio = 5;

echo sprintf('El área del circulo con radio de longitud %s es: %s', $radio, CircleMath::calculateArea($radio));

?>

Output
Performance
VLD
References
Branches

pow: documentation ( source)
sprintf: documentation ( source)

preferences:dark modelive preview

36.28 ms | 402 KiB | 5 Q