What is the area of the triangle with vertices O=(0,0,0)O = (0,0,0)O=(0,0,0), A=(3,0,0)A = (3,0,0)A=(3,0,0), B=(0,4,0)B = (0,4,0)B=(0,4,0)?
666
121212
777
72\frac{7}{2}27