Предмет: Геометрия, автор: house0

диагональное сечениеправильной четырехугольной призмы квадрат пощадью 18 см.Вычислите периметр основания призмы

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Автор ответа: Sanyasha

Вот я решила задачу на картинке. Удачи :)

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