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+---
+title: Math.PI
+slug: Web/JavaScript/Reference/Global_Objects/Math/PI
+tags:
+  - JavaScript
+  - Math
+  - Property
+  - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Math/PI
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>Math.PI</code></strong> 속성은 원의 둘레와 지름의 비율, 약 3.14159의 값을 가집니다.</p>
+
+<p><math display="block"><semantics><mrow><mstyle mathvariant="monospace"><mi>Math.PI</mi></mstyle><mo>=</mo><mi>π</mi><mo>≈</mo><mn>3.14159</mn></mrow><annotation encoding="TeX">\mathtt{\mi{Math.PI}} = \pi \approx 3.14159</annotation></semantics></math></p>
+
+<div>{{EmbedInteractiveExample("pages/js/math-pi.html")}}</div>
+
+
+
+<div>{{js_property_attributes(0, 0, 0)}}</div>
+
+<h2 id="설명">설명</h2>
+
+<p><code>PI</code>는 <code>Math</code>의 정적 속성이므로, 사용자가 생성한 <code>Math</code> 객체의 속성으로 접근할 수 없고 항상 <code>Math.PI</code>를 사용해야 합니다. (<code>Math</code>는 생성자가 아닙니다)</p>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="Math.PI_사용하기"><code>Math.PI</code> 사용하기</h3>
+
+<p>다음 함수는 <code>Math.PI</code>를 사용해 주어진 원의 반지름에서 둘레를 계산합니다.</p>
+
+<pre class="brush: js">function calculateCircumference(radius) {
+  return Math.PI * (radius + radius);
+}
+
+calculateCircumference(1);  // 6.283185307179586
+</pre>
+
+<h2 id="명세">명세</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">사양</th>
+   <th scope="col">등급</th>
+   <th scope="col">주석</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES1')}}</td>
+   <td>{{Spec2('ES1')}}</td>
+   <td>Initial definition. Implemented in JavaScript 1.0.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.8.1.6', 'Math.PI')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-math.pi', 'Math.PI')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-math.pi', 'Math.PI')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Math.PI")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{jsxref("Math")}}</li>
+</ul>