Question

Can anyone help me on the first question and can someone check if the 2nd question is right

Answer 1

Explanation:

1) Pythagorean Theorem: a² + b² = c²

4²+b²=5²

b²=5²-4²

b²=25-16

b=√9

b = 3

2) Good Job! Second Question is correct with accurate work shown.