Q. 16 A23.7( 7 Votes )

# The length of a r

Answer :

Given radius = 13cm, PQ = 10cm

⇒ PD

⇒ PD

⇒ PD = 5cm

Using Pythagrus theorem in O PD

⇒ OP^{2} = OD^{2} + PD ^{2}

⇒ 13^{2} = OD^{2} + 5^{2}

⇒ OD^{2} = 169-25

⇒ OD^{2} = 144

⇒ OD = 12cm

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