Предмет: Математика, автор: mail79

какое окно имеет меньшую площадь и на сколько: квадратное со сторонами 8дм или прямоугольноесо сторонами 70 см и 80 см?Нужно решение.

Ответы

Автор ответа: nurzh222

8 дм=80см
Sквадрата=а^2=80^2=6400см^2
Sпрямоугольника=а*в=70*80=5600см^2
6400cм^2 больше 5600см^2
6400cм^2 - 5600см^2 = 800
Отсюда:
Sпрямоугольника меньше чем Sквадрата

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