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In a square root spiral, which hypotenuse is formed after \(\sqrt{2208}\), and what is its exact value?

Answer and explanation

Correct answer: \(\sqrt{2209}=47\)

In a square root spiral, successive hypotenuses are \(\sqrt{1}, \sqrt{2}, \sqrt{3}\), and so on. Therefore, the hypotenuse after \(\sqrt{2208}\) is \(\sqrt{2209}\). Since \(47^2=2209\), \(\sqrt{2209}=47\). Option B has the correct radicand but an incorrect value, while option C skips to the next term. Exam tip: identify nearby perfect squares to check whether a square root is an integer.

Related tags

Square Root SpiralNumber SystemsPerfect SquaresSquare RootsPythagorean TheoremMathematicsClass 9 Mcq

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