Respuesta :

By similarity of triangles we can use the following expression:
 CD / 4.6 = 3.8 / 6.8
 Rewriting we have:
 CD = 4.6 * (3.8 / 6.8)
 Then, we look for the CD value:
 CD = 4.6 * (0.558823529)
 CD = 2.6
 Answer:
 
The value of CD is given by:
 
CD = 2.6