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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 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);