Предмет: Математика, автор: биго

Длина прямоугольника 16 ДМ,а ширина В 2 РАЗА МЕНЬШЕ.Найди ПЛОЩАДЬ И ПЕРИМЕТР ЭТОГО ПРЯМОУГОЛЬНИКА .ВЫРАЗИ ПЛОЩАДЬ В СМ2(в квадратных сантиметрах) и периметр-в обычных см

Ответы

Автор ответа: motya59

16 дм:2=8 дм-ширина прямоугольника
S-16*8=128 дм кв. =1280 см кв.
P=(16+8)*2=48 дм =480 см

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