DC = 24*2/3*1/3 = 16/3.
DC =(24 * 2/3) / 1/3 = 48
Oops! I made a mistake here;
The correct answer is:
BD = 24 * 2/3 = 16
BC = (16) / 1/3 = 48
DC = sqrt(482 - 162) = 16√8