Respostas

2014-03-31T18:41:46-03:00
Usando a fórmula

C=2πR
C=2*3,14*10
C=20*3,14
C=62,8 cm
2014-03-31T18:43:38-03:00
C=2.r.π
C=2.10.3,14
C=20.3,14
C=62,8
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