Question

Alex is building a circular base for a fountain. The radius of the circle is 4ft. what is the area of the base

Answer 1

Area=
$\pi \times r^{2}$
$\pi \times 4^{2}$
$\pi \times 16$

50.2654824574.....

Answer 2

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. 

$\pi r^{2}$ is the formula. Therefore:

$\pi 4^{2} = 16 \pi$