Respostas

2014-05-13T21:27:22-03:00
X = Raio x 2x o numero pi

X = 6,28 x 8

X = 50,24
2014-05-13T21:31:11-03:00

C = 2. pi .R

C = 2 . 3,14 . 8

C = 50,24