Relax

Respuesta :

Answer:

AC=21 cm, CB=7 cm

Step-by-step explanation:

3+1=4

AC= 3/4 AB

CB= 1/4 AB

AB=28

So.

AC=3/4 AB =3/4 x 28=21 cm

CB=1/4 AB=1/4 x 28=7 cm