Предмет: Математика, автор: kacaeva83

найди площадь листа картона квадратной формы длина стороны которого 7 дм

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Автор ответа: няха2014

Площадь=сторона1 * на сторону2
Площадь= 7 дм* 7 дм= 49(дм)

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