Can someone please help me ASAP?
I will give brainliest if it’s correct!

Answer:
5 inches.
Step-by-step explanation:
This is a right triangle so we can apply the Pythagoras theorem:
13^2 = x^2 + 12^2
--> x^2 = 13^2 - 12^2
--> x^2 = 169 - 144
--> x^2 = 25
--> x = 5.