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 :)
