Предмет: Математика, автор: Polina192837

Помогите пж. Я просто не могу я тупая! :):):)

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Ответы

Автор ответа: mailforazi
0
1дм² = 1дм*1дм = 10см*10см = 100см²

площадь листа картона S=35*20=700см²

остаток картона = 700-100*4 = 300см² = 3дм²

Ответ: 3дм²


Автор ответа: Polina192837
0
Спасибо
Автор ответа: умнаядевчка2004
0
ты не ошиблась тебя в школе чему учат
Автор ответа: умнаядевчка2004
0
не ошиблась что тупая
Автор ответа: Катя20007
0
35*20=700см² - площадь листа
1*4=4дм² - площадь вырезанных квадратов
4дм²=400см²
700-400=300см²=3дм²
Автор ответа: mailforazi
0
1 строку поправь вместо 25 - 35
Автор ответа: Polina192837
0
СПС
Автор ответа: Polina192837
0
Спасиб
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