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Question

A chord 8cm long is at a distance of 3cm from the centre of a circle. Its radius is


A

5 cm

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B

4 cm

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C

6 cm

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D

3 cm

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Solution

The correct option is A

5 cm


The perpendicular distance between the centre of the circle to the chord = 3cm

The line droped from centre of the circle to the chord bisects it.

Radius = 32 + 42 = 25 = 5 cm


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