Respostas

2014-04-15T13:37:47-03:00
B/4 = c/2
2b = 4c
b = 2c

b + c = 90
2c + c = 90
3c = 90
c = 30

b + 30 = 90
b = 90 - 30
b = 60
1 5 1
2014-04-15T14:23:48-03:00
B/4 = c/2
2b = 4c
b = 2c

b + c = 90
2c + c = 90
3c = 90
c = 30

b + 30 = 90
b = 90 - 30
b = 60