Răspuns:
Explicație pas cu pas:
A cerc = πR^2 = 144π
Cercul are 360°
________
c) (24π/144π)*360° = 24*360°/144 = 60°
d) (30π/144π)*360° = 30*360°/144 = 75°
e) (36π/144π)*360° = 36*360°/144 = 90°
f) (48π/144π)*360° = 48*360°/144 = 120°
g) (60π/144π)*360° = 60*360°/144 = 150°