Предмет: Математика, автор: a200410a

На прямоугольный стол размера x×80 см кладут одинаковые листы бумаги размера 5×8 см. Первый лист примыкает к левому нижнему углу, а каждый следующий кладут на один сантиметр выше и на один сантиметр правее предыдущего. Последний же лист примыкает к правому верхнему углу. Чему равна длина xсм в сантиметрах?

Ответы

Автор ответа: medovikkk

Я думаю что ответ 77

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