Предмет: Математика, автор: 16095

Найдите периметр треугольника, стороны которого равны 2 дм 3 мм, 12 см и 9 см 7 мм

Ответы

Автор ответа: fanta2310

519

Ответ:

Пошаговое объяснение:

2 дм 3 мм + 12 см + 9 см 7 мм = 203 мм + 120 мм + 97 мм = 420 мм = 4 дм 2 см

Автор ответа: johan64

246

Ответ:

20,3 см + 12 см + 9,7 см = 42 см

P∆=42 см

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