Answer:
12
Step-by-step explanation:
Pythagorean theorem
a²+b²=c²
a²+35²=37²
a²+1225=1369
manipulate the equation
1225-1369=-a²
-144=-a²
√-144=12
a=12
7 would probably end up being 6 12/12 if I am doing his correctly.
I don’t really understand the question so I just did 4 ways of this. Hope this help