Respuesta :

Answer:

b = 12

Step-by-step explanation:

a^2 + b^2 = c^2

25 + b^2 = 169

b^2 = 144

b = 12

a² + b² = c²

5² + b² = 13²

25 + b² = 169

b² = 169-25

b² = 144

b = √144

b = 12