Find the value of x no scam ,whoever gives the correct answer will be marked as a brainlist

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices

d i think

step-by-step explanation:

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3