Answer: PQ is 9 units.
Explanation:
The length of PQ can be found using the proportion of OQ and OP.
(PQ / OQ) = (OP / OQ)
PQ = (OP / OQ) * OQ
Substituting in the given values:
PQ = (9 / 11) * 11
PQ = 9
Therefore, the length of PQ is 9 units.
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