In given Fig. 2, the length $PB = $ ________ cm.

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Question

In given Fig. 2, the length $PB = $ ________ cm.

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Accepted Answer

Step 1: $OA = 5$ cm (radius of larger circle), $OP = 3$ cm (radius of smaller circle). In right $	riangle OPA$: $PA = \sqrt{5^2 - 3^2} = 4$ cm. Since perpendicular from centre bisects the chord, $PB = PA = 4$ cm

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