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While constructing a square root spiral, a student takes a right triangle with one side of length 1 unit and the other perpendicular side also 1 unit. What is the length of its hypotenuse?

Answer and explanation

Correct answer: \(\sqrt{2}\) units

By Pythagoras’ theorem, hypotenuse² = 1² + 1² = 2, so the hypotenuse is \(\sqrt{2}\) units. Option 2 is only the sum of the sides, not the hypotenuse. Exam tip: add squares, then take the square root.

Related tags

Number SystemsSquare Root SpiralPythagoras TheoremIrrational NumbersRight TrianglesMathematicsClass 9 Mcq

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