Respuesta :

If u see circle make 360° as a whole
So 45 ° is 1/8th of the entire angle

If u find whole area of a circle= pi×r^2
r=4 ft
A= 16π
So divide it by 8
A= 2π feet^2
williamwu309
Sinc the radius of the circle is 4 feet, the area = [tex] \pi [/tex][tex] r^{2} [/tex]. The area would equal [tex]16 \pi [/tex]. Then, [tex] \frac{360}{45} [/tex] would equal 8, and [tex] \frac{16 \pi }{8} [/tex] would equal [tex]2 \pi [/tex]