Предмет: Математика, автор: slavayudin1969

5.Периметр прямоугольника 34 см, его длина 9 см. Найти площадь.

Ответы

Автор ответа: BRAWLER7771

1

72 квадратных см

Если хочешь чтобы я тебе всё объяснил то пиши в лс

Автор ответа: TvoiPomoshnik228

0

Ответ:

72см

Пошаговое объяснение:

P=2(a+b)

34=2(a+9)

34=2a+18

2a=34-18

2a=16

a=16:2

a=8

S=axd

s=8x9

s=72

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