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Dik : -terdapat suatu segitiga ABC
-AB:BC:AC = 2:4:5
-kelililing segitiga = 44 cm
Dit : panjang AC = .....?
Jwb : keliling segitiga = AB+BC+AC
44 = AB+BC+AC
AC = 5/11×44
= 5×4
= 20 cm
Jadi, panjang AC adalah 20 cm.
semoga membantu.....