Respuesta :

Answer:

b= the square root of 20

Step-by-step explanation:

if a^2+b^2=c^2, then c^2-a^2=b^2. 6^2-4^2=c^2. So 36-16=b^2. 36-16=20.20=b^2, then take the square root of both sides to get b= the square root of 20.