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JavaScript Math PI Property

  • Last Updated : 01 Feb, 2021

Below is the example of the Math PI Property. 

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  • Example: 

Javascript




<script>
  // Here value of Math.PI is printed.
  document.write(Math.PI);
</script>

Output: 

3.141592653589793

The Math.PI is a property in JavaScript which is simply used to find the value of Pi i.e, in symbolic form Π which is nothing but it is the ratio of the circumference of a circle to its diameter, whose value is approximately 3.141. It is mainly used in a mathematics problem.

Syntax:  



Math.PI

Return values: It simply returns the value of PI i.e, Π

Below example illustrates the Math PI property in JavaScript.

Example: Here simply value of PI i.e, Π is shown as output.  

Input : Math.PI
Output : 3.141592653589793

More codes for the above property are as follows:

Program 1:Value of PI i.e, Π can be printed as in the form of function as shown below.  

Javascript




<script>
  // function is being called.
  function get_Value_of_PI()
  {
      return Math.PI;
  }
 
  // function is calling.
  document.write(get_Value_of_PI());
</script>

Output: 

3.141592653589793

Program 2: Here we consider Math.PI as a function but in actual it is a property that is why error as output is being shown. 

Javascript




<script>
  // Here we consider Math.PI as a function but
  // in actual it is a property that is why error
  // as output is being shown.
  document.write(Math.PI(12));
</script>

Output: 

Error: Math.PI is not a function

Program 3: Whenever we need to find the value of anything related to PI that time we take the help of this property. In mathematics, it needed a lot. Here we are going to find the value of the area of a circle with the given value of its radius. 

Javascript




<script>
  // function is being called with radius 5 as a parameter.
  function area_of_circle(radius_of_the_circle)
  {
      return Math.PI * radius_of_the_circle * radius_of_the_circle;
  }
 
  // Here area of the circle is 5 unit.
  document.write(area_of_circle(5));
</script>

Output: 

78.53981633974483

Supported Browsers: 

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Opera
  • Safari

 




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