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# CBSE Class 10 Answered

Q30
Asked by sangyaswarupa | 16 Mar, 2021, 10:06: AM
Expert Answer
Drop perpendicular from O to the chord BC.
So, OP will be perpendicular to BC
Therefore, triangle OPC is right angled triangle at P.
By Pythagoras theorem, we have
OC2 = OP2 + PC2
PC2 = OC2 - OP2 = 25 - 9 = 16
So, PC = 4 cm
Answered by Renu Varma | 16 Mar, 2021, 11:35: PM

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