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If the next hypotenuse is formed from \(\sqrt{168}\) in a square root spiral, which combined conclusion is correct?

Answer and explanation

Correct answer: The new hypotenuse is \(\sqrt{169}\) and its value is \(13\)

In a square root spiral, each new hypotenuse is obtained by adding 1 to the number under the previous radical. Thus, after \(\sqrt{168}\), the next hypotenuse is \(\sqrt{168+1}=\sqrt{169}\). Since \(169=13^2\), \(\sqrt{169}=13\). Option B has the correct radicand but gives the wrong value. Exam tip: add 1 to the radicand for the next hypotenuse, then check whether it is a perfect square.

Related tags

Square Root SpiralNumber SystemsPythagorean ConstructionPerfect SquaresIrrational NumbersMathematicsClass 9 Mcq

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