AC= 7.4cm and AB = 5cm then find rhe length of BC
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we know
(AB)^2 + (BC)^2 = (AC)^2
=> (5)^2 + (BC)^2 = (7.4)^2
=> (BC)^2 = (54.76) - (25)
=> (BC)^2 = 29.76
=> (BC) = 5.45
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