3449995000 is what I got, I did 3.45x10^9 and then used that number and subtracted the answer from 0.5x10^4 to get the final answer, if that makes any sense.
Answer:
ΔABC was rotated to form ΔA'B'C'. The transformation is isometric.
18 = 4 × 4 + 4 −√4 = (44 ÷ √4) − 4
∠BAD=2[180-(90+64)]=2*26°=52°
Please see the figure below.