Question

In the figure,'o' is the centre of the circle. OM=3cm and AB=8cm. find the radius of the circle ​

Answer 1

OM=3cm

AB=8cm =>AM=MB = 4cm

using Pythagoras theorem in ∆AOM,

AO²=AM²+OM²

AO²=4²+3²

AO=√(16+9)=√25 = 5cm

Radius is 5 cm

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