Respuesta :

My teacher taught us a song for this. It's kind of my favorite thing. It's called the circle song if you ever want to look it up. 

[tex] \pi r^{2} [/tex] is the formula. Therefore:

[tex] \pi 4^{2} = 16 \pi [/tex]
Area=
[tex]\pi \times r^{2} [/tex]
[tex]\pi \times 4^{2} [/tex]
[tex]\pi \times 16[/tex]

50.2654824574.....