Respuesta :

Step-by-step explanation:

Given: AD = 6cm

           m∠ACB = 90°

           m∠ACD = 30°

CA = 12cm     Leg opposite 30° theorem

m∠DCB = 60°  Complementary angles  

m∠CBD = 30°  Sum of angles in a triangle

BA = 24           Leg opposite 30° theorem

BD = BA - AD = 18

Hope this helps!!!

Have fun in RSM :)