题目如图,PAPAPA交⊙O\odot O⊙O于点BBB,PB=4PB=4PB=4,AB=4AB=4AB=4,⊙O\odot O⊙O的半径为555,则OPOPOP的长为______.知识点：切线长定理章节：图形的性质 / 圆
如图,交于点,,,的半径为,则的长为______.如图,交于点,,,的半径为,则的长为______.如图,交于点,,,的半径为,则的长为______.