Предмет: Математика, автор: 19811981

Периметр треугольника DCM равен 46 см 7 мм. сторона CM равна 18 см 3 мм, сторона DC короче ее на 4 см 8 мм. найдите длину стороны DM

Ответы

Автор ответа: lolka2012

Переведем все в миллиметры
периметр = 460мм
см=183
сд=48
дм=229
в см 22,9
Ответ Dm= 22,9 см

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