A line segment \[\overline{PQ}=8.2\text{ }cm\] is bisected at O, then length of \[\overline{\text{PO}}\] is _______.

A line segment \[\overline{PQ}=8.2\text{ }cm\] is bisected at O, then

1.	A line segment \[\overline{PQ}=8.2\text{ }cm\] is bisected at O, then length of \[\overline{\text{PO}}\] is _______.
A.	4.2cm
B.	4cm
C.	4.1cm
D.	16.4cm
Answer» D. 16.4cm