Respuesta :


Use circumference formula = pi*r^2

Total area = 6^2pi= 36pi = 113.04
Unshaded area = 4^2pi - 2^2pi = 16pi - 4pi= 50.24- 12.56 = 37.68
Shaded area = 113.04-37.68= 75.36

37.68/113.04= 0.333 ~~ 33%