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AB is the diameter of a circle of radius 9 cm. PQ is a chord (not a diameter) that intersects AB at M perpendicularly. If AM : BM = 5 : 4, then the length of chord PQ will be: |
$5\sqrt{5}$ cm $6\sqrt{5}$ cm $6\sqrt{3}$ cm $8\sqrt{5}$ cm |
$8\sqrt{5}$ cm |
