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In a square root spiral, which hypotenuse will be formed after (\sqrt{43})?

Answer and explanation

Correct answer: (\sqrt{44})

The square-root spiral advances by one under the radical at every stage. The construction uses the current hypotenuse and a new perpendicular segment of length 1. If the current hypotenuse is sqrt{n}, then the next hypotenuse has square length n+1, so its length is sqrt{n+1}. This is a direct application of the Pythagorean theorem.

Here the current value is sqrt{43}. Adding the square of the new unit side gives (sqrt{43})^2+1^2=43+1=44. Taking the positive square root, as lengths are positive, gives sqrt{44}. Therefore option C is correct. sqrt{42} is the preceding stage, while sqrt{43} is the existing hypotenuse, not the new one. There is no doubling in this process.

Related tags

Square-Root-SpiralNext-Root

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