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Geometry Difficulty 1.0 Junior Find the answer United Kingdom

The shorter sides of a right-angled triangle have lengths 5\sqrt{5} and 12\sqrt{12}. What is the length of the hypotenuse?

(A) 7\sqrt{7} (B) 13\sqrt{13} (C) 15\sqrt{15} (D) 17\sqrt{17} (E) 77

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