In the figure, ABC is a right triangle with height AD, resulting in Pythagorean triangles ABD and ACD. If AD=12, what is the length of BC?
Pythog triples...
345...
If AD is the 4, so then we have side lengths 9, 12, 15.
Maybe?
5,12,13...
Maybe for the ADC...
In that case DC is 5... BD is 9...
but this is pure guesswork
Do you ahve any other information?
Then Guesswork...
5+9= 14?
That's the best I can do.
I don't think it's correct but based on the question that's the only thing I can do.