Respuesta :

iciclepiano18

Answer:

[tex]r$\approx$2.9[/tex]

Step-by-step explanation:

The equation for circumference is:

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

We can plug 18 cm in for C:

[tex]18=2\pi r[/tex]

Divide both sides by 2

[tex]9=\pi r[/tex]

Divide both sides by [tex]\pi[/tex]

[tex]r$\approx$2.9[/tex]

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