Answer:
4
Explanation:
This is a right triangle, so you can use the Pythagorean Theorem.
+
=
C has to be the longest side. In this case, that is 5
+
=

+ 9 = 25 Subtract 9 from both sides
+ 9 - 9 = 25 - 9
= 16 Take the square root of both sides.
=

a = 4
Helping in the name of Jesus.