The answer to your question is -10
Answer:

Step-by-step explanation:
we know that
Applying the Pythagoras Theorem

solver for x



We can separate the shape into a rectangle and a square
the area of the rectangle :

the area of the square:

the area of the whole shape:

hope this helps
Step-by-step explanation:
take the right triangle
15^2 = 9^2 + x^2
225 = 81 + x^2
x = 12
area of square b = 144
Answer:
-1/12
Step-by-step explanation:
make the denominators congruent
8/12 and 9/12
then subtract
-1/12