Question

please give the answer and explanation and i will mark as brainliest

Answer 1

Answer:

4cm

Step-by-step explanation:

AB² + BC² = AC²

3² + BC² = 5²

9 + BC² = 25

BC² = 16

BC = √16

BC = 4cm = CD

Answer 2

Step-by-step explanation:

hope this will help you