IOM 2021, Блиц — Задача 5

The Blitz-contest of IOM-2021

Условие

In the tetrahedron $DABC$, the edges $DB$ and $AC$ are perpendicular. Given $AB = 5$, $AD = 2\sqrt{22}$, and $DC = 12$, find the length of $BC$.

If the answer is a fraction, it can be entered either as a decimal fraction or as a ratio “$r/s$”. Rounding is not allowed.

Отговори

Решение

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Оригинал в Архива: iom-2021-blitz-tasks-eng.pdf · официални решения: iom-2021-blitz-answers-eng.pdf