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While drawing a square root spiral, a student adds a perpendicular side at the end of the previous hypotenuse in each new right triangle. What should be the length of this new perpendicular side to extend the spiral up to \(\sqrt{10}\)?

Answer and explanation

Correct answer: 1 unit

In a square root spiral, each new right triangle uses the previous hypotenuse and a perpendicular side of 1 unit. After \(\sqrt{9}\), the hypotenuse is \(\sqrt{9+1}=\sqrt{10}\). Using \(\sqrt{9}\) as the new side is incorrect. Exam tip: the added side is always 1 unit.

Related tags

Number SystemsSquare Root SpiralPythagoras TheoremIrrational NumbersGeometry ConstructionMathematicsClass 9 Mcq

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