Respostas

2013-12-08T18:14:33-02:00
D = 2r
24 = 2r
r = 24/2
r = 12 m

Comprimento:
C = 2π * r
C = 2 * 3,14 * 12
C = 6,28 * 12
C = 75,36 m

Basta multiplicarmos:

x= 6.75,36
x=452,16 m.




0
2013-12-08T18:25:49-02:00
D = 2r
24 = 2r
r= 24/2
r= 12 m

C= 2π.r
C= 2.3,14.12
C= 6,28.12
C= 75,36 m

6.75,36
452,16 m