Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript Practice Getters and Setters in JavaScript Practicing Getters and Setters Practice Creating and Calling a Setter Method

Thristen Jones
Thristen Jones
2,824 Points
Posted by Thristen Jones
Thristen Jones
2,824 Points

Calculating area?

it says do pie(radius * 2) in the formula for area and this is exactly how i have it. "this.area = Math.pow(3.14, radius * 2)" but its saying im wrong.

Circle.js 
class Circle {
    set radius(radius) {
      this.area = Math.pow(3.14, radius * 2)
      this.circumference = 2 * 3.14 * radius ;
      this._radius = radius
    }


}

const circ = new Circle();

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

The instructions say the formula for area is area = Ī€*r^2, which assumes that you know to apply the exponent first. Perhaps they should have written it as: Ī€ * (r^2). What the code above is doing is actually Ī€ ^ (r*2) instead.

Ī€ * (r^2) is what I meant in my previous answer when I described it without using the symbols as PI times (R squared).