What is the exact area of a circle with a radius of 12 feet?

A. 24π square feet
B. 36π square feet
C. 121π square feet
D. 144π square feet

Question

What is the exact area of a circle with a radius of 12 feet?
       
A. 24π square feet
B. 36π square feet
C. 121π square feet
D. 144π square feet

anonymous · Answer

@kewlgeek555

kewlgeek555 · Answer

Hi.  Sorry for the delay, I was telling the other person that I had to help you first. c:

anonymous · Answer

C: That's okay! I am just greatful you are even helping me!

kewlgeek555 · Answer

Okay so remember that the area of a circle is...
$$A=\pi r^2$$

Basically this is the radius times the radius again times 3.14.  Can you do that?

Oh, but it still has the pi sign there, so I am guessing that it is just radius times radius.  So...

12 * 12 = ?

anonymous · Answer

144

kewlgeek555 · Answer

So the radius is 144 * π, or just 144π. c;

kewlgeek555 · Answer

Call me for any of your math problems!  I am in ninth grade. xP

anonymous · Answer

Okay thanks so much!