Respuesta :

Answer:

7.2

Step-by-step explanation:

a^2 + b^2 = c^2

a^2 +12^2 = 14^2

a^2 = 14^2 - 12^2

a^2 = 196 - 144

a^2 = 52

a =  square root of 52 = 7.2