Предмет: Математика, автор: dzhafarovaayshan

Длина прямоугольника больше ширины в 5раз ,пересмотре равен 36см .найди площадь прямоугольника

Приложения:

Ответы

Автор ответа: alex080297

Ответ:

S=45 см²

Пошаговое объяснение:

Пусть x-ширина прямоугольника

5x-длина прямоугольника

P=2(a+b)

36=2(5x+x)=2*6x=12x

x=3 см - ширина прямоугольника

5*3=15 см - длина прямоугольника

S=a*b=15*3=45 см²

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