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What is the length of AB if $CD = 10 cm$ ?

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5 cm

6 cm

8 cm

10 cm

answer is D.

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Detailed Solution

Concept: It is known that the chords that are equidistant from the centre of a circle have the same length.

Here, AB and CD are equidistant from the centre.

It is given that.

$CD = 10 cm$

Hence, the length of AB is 10 cm.

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