Problem

2023 AIME I Problem 13

Each face of two noncongruent parallelepipeds is a rhombus whose diagonals have lengths \sqrt{21} and \sqrt{31}. The ratio of the volume of the larger of the two polyhedra to the volume of the smaller is \frac{m}{n}, where m and n are relatively prime positive integers. Find m + n. A parallelepiped is a solid with six parallelogram faces such as the one shown below.

Problem 13 diagram

Leading zeroes must be inputted, so if your answer is 34, then input 034


Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.


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Problem Tags: 3-d Algebra Geometry Number theory

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