Respuesta :

A = πr^2
A = 
π x 4^2
A = 16
π

Answer
A = 16
π ft^2
Use [tex] \pi [/tex]r^2 as your formula to find the area of your circle. r represents the radius (4ft)

a=[tex] \pi [/tex](4)^2
a=16[tex] \pi [/tex] ft^2