13 2dCara menggambar objek 2d di autocad #autocad #tutorialautocad # 14:13 · Go to channel. Microsoft Windows 10: Your Old PC is Now TrashOn putting A=0 and B=13, we can get 13. On putting D=0 and B=13 in eqn (2), we can still get 13. Thus, we can say that the value of D cannot be determed from the given data.