32. because if A F is 5 units then that’s just half of A E so because it’s half we want the full value of A E so that’s 10 and same for E C so E C is 10 and A E but it says A B is 6 units so bc it’s half of A C we multiply it by 2 and get 12 so then you add it all up 10 + 10 + 12 = 32