Answer:
63
Explanation:
- We need to plug in b and c in order to solve for a. C is the long slanted side.
-
=
![a^(2)](https://img.qammunity.org/2023/formulas/mathematics/high-school/7x1ukucbj6tgzh82gm6b1okjbm4rkwxch3.png)
- 12 • 12 = 144, and 9 • 9 = 81.
- 144 - 81 = 63.
If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.