Version: 2021.3
LanguageEnglish
  • C#

Mathf.PI

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Switch to Manual
public static float PI;

Description

The well-known 3.14159265358979... value (Read Only).

The ratio of the circumference of a circle to its diameter. Note that this value is a 32-bit floating point number i.e. a float. Approximately seven digits of precision are provided.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public float radius = 5;

void Start() { float perimeter = 2.0f * Mathf.PI * radius; Debug.Log("The perimeter of the circle is: " + perimeter); } }