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12(B13). Объём кирпича с вырезанным кирпичиком (вар. 41)


Найдите объём многогранника, изображённого на рисунке
(все двугранные углы прямые).



Перед нами обыкновенный кирпич с вырезанным из него кирпичиком.
Прикроем дощечками образовавшуюся брешь. Сначала левую стенку,
затем переднюю и наконец, положим сверху крышечку.



Посчитаем объём большого кирпича и вычтем из него объём маленького.

Vбол. = 4 · 3 · 3 = 36
Vмал. = 2 · 1 · 1 = 2

Vфиг. = 36 - 2 = 34

Ответ: 34


Автор: Ольга Себедаш             Просмотров: 8196

Комментарии к этой задаче:

Комментарий добавил(а): Бог
Дата: 2013-09-11

Опечатка в ответе

Комментарий добавил(а): egetrener
Дата: 2013-09-11

Спасибо, поправила.

Комментарий добавил(а): Scoodokib
Дата: 2014-03-14

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Комментарий добавил(а): Scoodokib
Дата: 2014-03-14

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