Multiple choice question I — task. Mathematics State Board, Class 9.

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1. \(PQ\) and \(RS\) are two equal chords of a circle with centre \(O\) such that \(\angle POQ = 70^\circ\), then \(\angle ORS = \)

\(80^\circ\)
\(70^\circ\)
\(60^\circ\)
\(55^\circ\)

2. A chord is at a distance of \(15\) \(cm\) from the centre of the circle of radius \(25\) \(cm\). The length of the chord is:

\(40\) \(cm\)
\(20\) \(cm\)
\(18\) \(cm\)
\(25\) \(cm\)

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