Help me with math. I’m kinda confused.

Answer:
Area: [tex]36\pi\ cm^2[/tex] OR [tex]113.04\ cm^2[/tex]
Circumference: [tex]12\pi[/tex] OR [tex]37.68[/tex]
Diameter: 12cm
Radius: 6 cm
Step-by-step explanation:
Area of a circle: [tex]\pi r^2[/tex]
[tex]\pi *6^2\\\pi *36\\36\pi\ cm^2[/tex] OR [tex]36*3.14=113.04\ cm^2[/tex] (either one is the answer)
Circumference of a circle: [tex]2\pi r[/tex]
[tex]2\pi r\\2*\pi*6\\12\pi[/tex]OR [tex]12*3.14=37.68[/tex] (either one is the answer)
Hope this helps!