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Find AC in the figure above with Pythagoras' theorem​

Find AC in the figure above with Pythagoras' theorem​-example-1
User Joe Ho
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by pythagoras theorem,
cb^2 = ac^2 + ab^2
5^2 = ac^2 + 3^2
ac^2 = 5^2 - 3^2 = 16
ac = squareroot 16 = 4cm
User Rashed Rahat
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