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In the figure, \(CP\) and \(CQ\) are tangents to the circle with centre at \(O\). \(ARB\) is another tangent touching the circle at \(R\). If \(CP = 12\) \(cm\) and \(BC = 4\) \(cm\), then find the length of \(BR\).
 
Prob 9.png
 
Answer:
 
 The length of \(BR\) \(=\)  \(cm\)