Предмет: Математика, автор: katya1980

площадь прямоугольника равна 56дм.длина участка равна 7дм.найти периметр участка?

Ответы

Автор ответа: Аноним

56:7=8 дм- ширина

Р=(8+7)х2=30 дм

Автор ответа: lopidus

S=56дм

длина -7дм

56/7=8

S 8*7=56

P 2(8+7)=30

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