Предмет: Математика, автор: poloow09

Чтобы покрасить 1 дм (в квадрате) площади нужно 2.2 г краски.Сколько нужно краски, чтобы покрасить внешнюю сторону посуды без крышки, имеющую форму куба со стороной 6 см? А)396 г. В)512 г. С)482 г. D)651 г.

Ответы

Автор ответа: Аноним

переведем см в дм
6см=0,6дм
найдем площадь поверхности куба
П=0,6*0,6*5
П=1,8
определим расход краски
1,8*2,2=3,96
Ответ А)

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