Respostas

2014-03-11T23:58:33-03:00
C = 2.pi.r
56,52 = 2.314.r
56,52= 6,28r
r=9cm
D= 2r
D= 2.9
D= 18cm
2014-03-12T00:53:20-03:00
(56.52/pi,{x, -26.87, 26.87},{y, -26.87, 26.87}),{x, -26.87, 26.87},{y, -26.87, 26.87})