Предмет: Математика, автор: Баам3

Ромб имеет такой же периметр, как и данный квадрат. Площадь какой из этих фигур больше? Ответ обоснуйте.

Ответы

Автор ответа: salinar

Пусть Pкв = Рромба. Но Ркв = 4а, а Рромба = 4а.
Тогда, а=а1, Sкв = а•а. Рромба= а1•h, но ha•h1, так что Sкв>Sромба.

Автор ответа: Баам3

А в чём разница между Pкв и Pромба ?

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