pls answer,..........
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apply Pythagoras in triangle OMA
OM^2 + AM^2 = OA^2
4*11 + 10*10 = 144 = OA^2
so OA = radius = √144= 12
OM^2 + AM^2 = OA^2
4*11 + 10*10 = 144 = OA^2
so OA = radius = √144= 12
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