Предмет: Математика, автор: Аноним

В классе 20 парт.Длина крышки парты 110 см,ширина 50см.Сколько краски нужно,чтобы покрасить крышки парт,если на 1м кв потребуется 100 г краски?

Ответы

Автор ответа: ИринаАнатольевна

1) 110*50=5500 (кв.см) - площадь крышки одной парты

2) 5500*20=110000 (кв.см) - площадь крышек двадцати парт

110000 кв.см=11 кв.м

3) 100*11=1100 (г) - краски потребуется

1100 г=1 кг 100 г

Ответ: для покраски крышек двадцати парт потребуется 1 кг 100 г краски.

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