Answer:
15
Step-by-step explanation:
i dont know if your looking for the area but i can help you out on that, and im sooper sorry if this is the wrong answer! Plz forgive me if so!
d,a is 3 and from d to c is 5, 3x5=15, thats the area of the square!!
If you were looking for a different answer plz forgive me you didnt exactly tell us what you were looking for so i kinda just guessed it was area of the square real sorry if this is wrong!!