Предмет: Математика, автор: kgorbac53

Пожалуйста помогите решить задачу:
1.Периметр прямокутника дорівнює 15.6 дм, одна з його сторін на 2.6 більша за другу. Знайдіть площу прямокутника.
Зарание спасибо

Ответы

Автор ответа: matfeygavrilenko
0

Ответ:

а1=2.5, a2=5.3

Пошаговое объяснение:

Р=15,6

а1=х

а2=х+2,8

Р=2(а1+а2)

Р/2=х+х+2,8

7,8=2х+2,8

5=2x

х=2,5

первая сторона 2.5, вторая 5.3

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