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JAMB - Mathematics (1987 - No. 35)

What is the locus of the mid-points of all chords of length 6cm within a circle of radius 5cm and with centre 0
A circle of radius 4 cm and with centre O
The perpendicular bisector of the chords
a straight line passing through centre O
A circle of radius 6 cm and with centre O

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The locus of the mid-point of all chords of length 6cm within a circle of radius 5cm and with centre O is the perpendicular bisectors of the chords.

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