Предмет: Математика, автор: Creper1

сторона квадрата 16дм.ширина прямоугольНика периметр которогов составляет 80% периметра данного квадрата,равна 60% от длины.Найдите стороны прямоугольника

Ответы

Автор ответа: Sab1na

16×4=64 дм периметр квадрата
64÷100×80=51.2 дм периметр прямоугольника
х длина прямоугольника
0.6х ширина прямоугольника
(х+0.6х)×2=51.2
3.2х=51.2
х=51.2÷3.2
х=16 дм длина прямоугольника
16×0.6=9.6 дм ширина прямоугольника

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