Am learning OOJ(object oriented javascript) and am stuck here.

Question

I need to add a new method to the Shape class's prototype called calcPerimeter(), which calculates its perimeter (the length of the shape's outer edge) and logs the result to the console.
Here is my code.
https://code.sololearn.com/Wi3zdC2dOyjA/?ref=app
The full link to the question is https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/Test_your_skills:_Object-oriented_JavaScript

Answer 1

https://code.sololearn.com/WeXDq50vt0Gu/?ref=app