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Автор - lolkek4475

периметр квадрата 84 см найди ширину прямоугольника площадь которого в 7 раз меньше площади квадрата длина прямоугольника 9 см

Ответ

Автор - elen30091969

84÷4=21

21×21=441

441÷7=63

63÷9=7

ответ7

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