Вопрос школьника по предмету Математика
Периметр треугольника равен 1.25м.Одна сторона равна 4.3 дм,а вторая-на 5/3см короче первой.Найдите длину третьей стороны и выразите её в метрах.
Ответ учителя по предмету Математика
1.25м = 125 см
4.3 дм=43 см
43/5/3=25.8 см вторая сторона
125-(43+25.8)=56.2 третья сторона
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