Предмет: Математика, автор: povshykvaleria

)Периметр квадрата дорівнює 28 см. Знайти його площу.

GambitPups0: 12

Ответы

Автор ответа: filipenkonikolaj801

0

Пошаговое объяснение:

..................................

Приложения:

Автор ответа: alinak3170

0

Ответ:

49 см²

Пошаговое объяснение:

1) Р=4а, где а - сторона квадрата,

Р=28

4а=28

а=28÷4

а=7 (см)

2) S=a²

S=7²

S=49(см²)

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