Предмет: Физика, автор: kravcuks759

Даю сто балів здавать через 20 хвилин
Зробити 8 вправу

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Автор ответа: liannazera

0

Це 10

На кожній стороні куба можна провести по 2 діагоналі. По теоремі Піфагора довжина діагоналі = 9 + 9 = кв. кореня з 18. Сума діагоналей = 12 коріння з 18.2) Якщо треба знайти діагоналі, що знаходяться безпосередньо в кубі, то 18 +9 = діагоналі в квадраті. Діагональ = корені з 27. Таких діагоналей можна провести всього 4, так що сума діагоналей дорівнюватиме 4 корінням з 27.

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