As shown in the figure, D is the midpoint of CB, AC: CB = 1:6, DB = 12cm, find the length of AD |_____ |______ |______ | A C D B

As shown in the figure, D is the midpoint of CB, AC: CB = 1:6, DB = 12cm, find the length of AD |_____ |______ |______ | A C D B

Because D is the midpoint of CB, CD = DB = 12cm, CB = 24cm;
Because AC: CB = 1:6, that is, AC: 24 = 1:6, the solution is AC = 4cm;
So ad = 16cm