var x = prompt("What is the radius of your circle?", "")

var y = new Circle(x)

function Circle (radius) {

this.radius = radius;

this.area = function () {

return Math.PI * this.radius * this.radius;

```
};
// define a perimeter method here
this.perimeter = function() {
return Math.PI * this.radius * 2;
}
```

};

console.log("The area of your circle is " + y.area + ". The circumference of you circle is " + y.perimeter)

I know that this is not required for the activity but I was just wondering how you could print out the area and perimeter of a user inputted circle?