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In a circle, a diameter AB and a chord PQ (which is not a diameter) intersect each other at X perpendicularly. If AX : BX = 3 : 2 and the radius of the circle is 5 cm, then the length of chord PQ is

2√13 cm
5√3 cm
4√6 cm
6√5 cm

Correct Answer: 4√6 cm

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