Respuesta :

Answer:

[tex]d = 241.78 \ cm[/tex]

Step-by-step explanation:

[tex]C=2\pi r[/tex]

Here C=77cm

Therefore

[tex]r=\frac{C}{2\pi }[/tex]

[tex]d=2r=\pi C[/tex]

[tex]d=3.14(77)=241.78 cm[/tex]