ساعدوني في الجافا ضروري

عندي سؤال و أتمنى حد يحله ..

Write a function to calculate the circumference of a circle. Hint the value of ¼ is provided by JavaScript in the cell named Math.PI (be careful about case, MATH.PI is not the same a Math.PI).



<script>

function circumference(radius){

var v = 2 * Math.PI * radius;

return v;

}

var r = 1;

document.write("circumference ", circumference(1/Math.PI), "<br>");

</script>

سااااااااااااااااااااعدوني ضروري ..

و جزاكم الله خيرا ..