Respuesta :

Area of sector = [tex]\frac{angle}{360} \pi r^{2}[/tex]

32[tex]\pi[/tex] = [tex]\frac{45}{360} \pi r^{2}[/tex]

32 = [tex]\frac{1}{8} r^{2}[/tex]

[tex]r^{2}[/tex] = 256

r = 16 cm