please solve this ASAP
6^2 = 4^2 + b^236 = 16 + b^2b^2 = 20\(b = 2 \sqrt{5}\)
A^2+B^2=C^24^2+b^2=6^216+b^2=36-16 -16 b^2=20it would be 4.4 or if you want to round it 4.