findCircumferenceCircle()

Step 1: Define the Constant

In JavaScript, you would want to first define the constant value of pi, which is universally understood to be 3.14159. This is because the circumference of a circle can be calculated as 2πr, where r is the radius of the circle.

const pi = 3.14159;

Step 2: Create the Function

Next, you need to create a function that takes radius as a parameter. This function, when called, will calculate the circumference of a circle given a specific radius.

function findCircumference(radius){}

Step 3: Implement the Calculation

Inside the findCircumference function, use the formula 2πr to calculate the circumference. We already have pi defined, just multiply it by 2 and the radius to get the circumference.

function findCircumference(radius){
   const circumference = 2 * pi * radius;
}

Step 4: Return the Result

In order to utilize the calculated circumference outside of the function, we need to return the result.

function findCircumference(radius){
   const circumference = 2 * pi * radius;
   return circumference;
}

Conclusion

Finally, with this function findCircumference(radius), you can calculate the circumference of any circle by providing the radius as input. Here's the complete implementation in Javascript.

const pi = 3.14159;
function findCircumference(radius){
   const circumference = 2 * pi * radius;
   return circumference;
}

You can simplify it even more by using JavaScript's built-in Math.PI:

function findCircumference(radius){
   const circumference = 2 * Math.PI * radius;
   return circumference;
}