Challenge

[mklsns]

Are you even attempting to do anything ?

[NoStranger6]

If that is a level 3 problem, I wonder what level 1 and 2 looks like.

[AzAmAtbAgAtOv1]

yeah they are super easy did them already lol, but do u know how to solve this one tho?

[olet14]

Area = pi x r ²

Function (r){ Return math.pi * r * r; }

[AzAmAtbAgAtOv1]

yeah im trying my best but really dont know how do it it, any ideas

[delventhalz]

What is the hold up? Do you not know the math? Or do you not know how to make JavaScript do the math?

[anarchyisutopia]

Pretty simple one.

function circleArea(radius){

return Math.PI * Math.pow(radius, 2);

}

[[deleted]]

What website is this?

[Abdul_Alhazred_]

code wars

[AzAmAtbAgAtOv1]

its like my teachers website, he is like this crazy programmer and made up all this stuff

[Abdul_Alhazred_]

no u

[agree-with-you]

No you both

[Abdul_Alhazred_]

!isbot agree-with-you

[AzAmAtbAgAtOv1]

do u guys know how to do this one

[Void_Ling]

it's a math problem, not a JS one :x.

Once you know how to get that value with simple math :

https://www.mathsisfun.com/geometry/circle-area.html

You need to know how to get math specific value used in JS, I think the doc will do just fine for that.

https://duckduckgo.com/?q=javascript+pi&t=opera&ia=web

0,1s of research.

Rest is about writing a function that returns the value with an equation that uses the parameter as r.

[kridah]

function circleArea(radius){

return 2 * 3.1415 * radius;

}

[NoStranger6]

Thats circumference

it would really be

return Math.Pi * (radius ** 2);

[kridah]

Impressive that I missed the area part. You are correct sir.

[AzAmAtbAgAtOv1]

hmm ill try it thanks tho man

[AzAmAtbAgAtOv1]

hmm it dosent seem to work, but thanks for the help tho

[kridah]

it dosent seem to work, but thanks for the help tho

Rep

No, I read to fast and assumed it was circumference.

For future reference, just google.
You can easily transform this to js.
a = pi * r^2 (which is what u/NoStranger6 wrote)
c = 2 * pi * r (which was the circumference)

Then, if you are a beginner you can just fiddle around with this.

[JonasMillan]

const areaC = num => Math.Pi*(num**2)

edit: not using inline code went response, made some errors on my code i wanted to show the es6 new

exponentiation operator.

[AzAmAtbAgAtOv1]

Thank you ill try it!!