4.4.2.2. Dobre nazwy zmiennych

/*Variable names should be descriptive, providing context about the data
they contain and how they will be used.*/

let radiusOfCircle = 5;
const pi = 3.14;
let areaOfCircle = pi * radiusOfCircle ** 2;
console.log(areaOfCircle);

/*TIP:
When considering program readability, think about whether or not your 
code will make sense to another programmer. It is not enough for code 
to be readable by only the programmer that originally wrote it.*/
Tough Tortoise