Respostas

  • Usuário do Brainly
2014-03-19T23:06:20-03:00
(b/4) = (c/2) ⇒ 2b = 4c ⇒ b = 2c (I)

b+c = 90 ⇒ b = 90-c (II)

Igualando I e II: 2c = 90-c ⇒ 3c = 90 ⇒ c = 30
b = 2.30 ⇒ b = 60