Two circles of radius 13 cm and 15 cm intersect each other at points A and B. If the length of the common chord is 12 cm, then what is the distance between their centres?
1
\( \sqrt{145}+\sqrt{184}\)
2
\( \sqrt{131}+\sqrt{181}\)
3
\( \sqrt{145}+\sqrt{169}\)
4
\( \sqrt{133}+\sqrt{189}\)