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, 2006

Geometry Difficulty 2.0 Junior Find the answer Canada

In a right-angled triangle, the sum of the squares of the three side lengths is $1800$ . The length of its hypotenuse is

(A) $\sqrt{1800}$ (B) $\frac{1}{2}\sqrt{1800}$ (C) $90$ (D) $30$ (E) $45$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.