Answer:
D: = 576 +
Step-by-step explanation:
Well you want to find what x is so you need the square root
We already have the area for one of the squares (576) which can help us find what x is.
And the bottom small square is 7 and since it's a sqaure all the sides are congruent/ same. Which means u get .
And you need to add them all up to get what x is
and is since both sides of that triangle will have the same lengths, and when u have both of those lengths its easier to find the area
Hope this helped!