Respuesta :

RhondaSommer
[tex] 2\pi r~or~ \pi d [/tex] so divide 3 by [tex]/pi[/tex]
apologiabiology
this was asked already
c=pid or
c=2pir

use first one
c=3pi
3pi=c=pid
3pi=pid
divide by pi
3=d
diameter=3 units

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