Respuesta :

Answer:

[tex]p = 37.6991118431[/tex]

Step-by-step explanation:

the perimeter of a half circle:

[tex]\pi r = \frac{d}{2} \pi = 3\pi = 9.4247779608[/tex]

there's the total of 4 half circle:

[tex]p = 9.42477796078 \times 4 =37.6991118431[/tex]