Applications of Circle Symmetric Property 1

Applications of Circle Symmetric Property 1

Secondary 3

The following shows a circle with centre \(O\).
\(CD\) is a chord of length \(24\) cm.
The perpendicular from \(O\) to chord \(CD\) meets it at \(M\), with \(OM=5\) cm.
Find the radius of the circle.

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Answer:\(13\text{ cm}\)

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