Find the area. Simplify your answer.

2x^2

Step-by-step explanation:

if you draw a diagonal, you will have two triangles with base x and height x

so area= 2 * 1/2 * b * h = b * h= 2x * x

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