Respuesta :

arimin

Answer:

a = 1.91

Step-by-step explanation:

12 = 2π(r)

12/2 = 2π(r)/2

dividing by 2

=

6 = π(r)

you then divide this by π, or 3.14

6/3.14 = π(r)/3.14

=

1.91

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