Предмет: Математика, автор: ннн192

ширина прямоугольника в два раза меньше длины, а периметр равен 36см. чему равна ширина?

Ответы

Автор ответа: nata20032

0

Пусть ширина прямоугольника = х, тогда длина прямоугольника = у. Зная, что 2х=у. Зная что 2х + 2у = 36 соствил и решил уравненем.
2х=у
2х + 2у = 36

2х + 2(2х) = 36 у=2*6
2х + 4х = 36 у = 12
6х = 36
х = 6
6см - ширина
12 см длина
Ответ: 6см; 12 см.

Автор ответа: ннн192

0

спасииибо!)))

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