Предмет: Математика, автор: Аноним

От картонного листа квадратной формы отрезали полоску шириной 4 см. Найдите размеры картонного листа в начале и потом, если площадь оставшейся части листа равна 60 см²

Ответы

Автор ответа: kanmmu
0

Ответ:

Пошаговое объяснение:

Если площадь отрезанной полоски 60, то ее длина 60/4=15, тогда сторона изначального квадрата равна 15, тогда его площадь в начале  равна 225, тогда его площадь потом равна 225-60=165

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