Respuesta :

Calculate the perimeter of the top semicircle.
P₁ = 6π

Calculate AB + ED.
P₂ = 6 + 6 = 12

Calculate the perimeters of the two smaller semicircles.
P₃ = 2π(3) = 6π

Calculate the total perimeter.
P = P₁+P₂+P₃ = 12 + 12π

Answer: 12 + 12π

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