Предмет: Геометрия, автор: uliac77

Одна из сторон параллелогарамма в 3 раза больше другой. Найдите длину меньшей стороны, если периметр параллелограмма равна 32 см.

Ответы

Автор ответа: zhenyaM2002
0
1 сторона - х см
2 сторона  - 3х  см
Р= 32 см
Формула периметра: Р=2*(а+b), где а и b- стороны.
2* (х+3х) =32
2*4х=32
8х=32
х=32:8
х=4 см  - меньшая сторона
3*4= 12 см - большая сторона
Проверим: Р= 2*(4+12)=2*16=32 см
Ответ: 4 см - меньшая сторона.

Автор ответа: zoomon
0
Меньшая сторона х
Большая 3х
Периметр 32
Х + 3х = 32
4х = 32
Х = 32:4
Х= 8 см
Ответ: 8 см меньшая сторона
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