Two chords PQ and RS of a circle intersect at D inside a circle. If PD = 8.4 cm, DQ = 2.4 cm, SD = 1.2 cm, the length of RS is equal to / एक वृत्त के अंदर D बिंदु पर दो जिह्वा PQ और RS एक दुसरे को काटते हैं। यदि PD = 8.4 सेमी, DQ = 2.4 सेमी, SD = 1.2 सेमी, RS की लंबाई बराबर है

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