AB AB\,AB is parallel to XYXYXY. The lines AY AY\,AY and BX BX\,BX intersect at PPP. AB=6AB = 6AB=6 cm. XP=12.5XP = 12.5XP=12.5 cm. XY=15XY = 15XY=15 cm.
Work out the length of BPBPBP.