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