Question

Help Me with this This is very difficult

Answer 1

Answer:

13 cm

Step-by-step explanation:

AC=13 cm, AB= 13 cm, ∠ADB=90°, therefore ∠ADC=90°

This proves that the traingle in the figure is an equilateral traingle, i.e. a triangle having 3 equal sides...

Therefore, AC=AB=BC.

So, BC is 13 cm...

Hope this had helped you....