If the diameter of the circle above is 12 mm, what is the area of the circle?

6 mm2
36 mm2
144 mm2
12 mm2

Question

If the diameter of the circle above is 12 mm, what is the area of the circle?

    6 mm2
    36 mm2
    144 mm2
    12 mm2

logan13 · Answer

https://app159.studyisland.com/pics/52564diameter.png

unanimoose · Answer

Ok so before you keep posting the questions to your test let me walk this out for you so that you can do it by yourself without having others answer it for you.

logan13 · Answer

@AlexandervonHumboldt2

unanimoose · Answer

$$A = r^2\pi$$

alexandervonhumboldt2 · Answer

radius=1/2 diameter
area=radius^2*3.14

logan13 · Answer

not a test

unanimoose · Answer

The radius is needed to do this. The radius is HALF the diameter.

unanimoose · Answer

If it's not a test then what is it?

logan13 · Answer

studyisland

unanimoose · Answer

But anyway, the diamater is 12 here so to find the radius we need to do:

12/2

unanimoose · Answer

If you're just going to look for answers on here then you may as well stop using studyisland because it's not doing anything for you.

unanimoose · Answer

So anyway:

12/2 = 6

Now we can plug that in: $$A = 6^2\pi$$

unanimoose · Answer

So now we can square the radius and you will have you solution, and for most options you won't need to apply pi.

$$A = 36\pi$$