Question

plsss answer urgent ​

Answer 1

Answer:

c ans 3cm for sure

Step-by-step explanation:

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Answer 2

Answer:

4cm

Step-by-step explanation:

In using Pythagoras theorem, we get AB 2 + BC 2 = AC2 9 + BC 2 = 25 BC = 4 cm In ΔABC and ΔADC ∠BAC = ∠CAD (Therefore, AC is bisector of ∠A) ∠B = ∠D = 90° ∠ABC + ∠BCA + ∠CAB = 180° ∠CAD + ∠ADC + ∠DCA = 180° ∠ABC + ∠BCA + ∠CAB = ∠CAD + ∠ADC + ∠DCA ∠BCA = ∠DCA (i) In ΔABC and ΔADC ∠CAB = ∠CAD (Therefore, AC is bisector of ∠A) ∠BCA = ∠DCA [From (i) AC = AC (Common) By ASA theorem, we have ΔABC ≅ ΔADC BC = CD 4cm