Предмет: Математика, автор: loyshina2004

сколько нужно досок длинной 4м и 4 дм,чтобы застелить пол квадратной комнаты сторона которой 8м

Ответы

Автор ответа: YulkaTzyar

Находим площадь комнаты: 8х8=64 м^2
Находим площадь доски: 4мх0,4м(4 дм)=1,6м^2
Теперь делим площадь комнаты на доску, чтобы найти, сколько нужно досок:
64:1,6=40 досок.

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