Предмет: Математика, автор: Cobachka228

длина прямоугольника 19 дм а ширина на 7 см короче чемц равен его периметр? пж очень нужно(

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Автор ответа: mur1meow

Периметр прямоугольника находится по следующей формуле: (a+b)*2
1) 19 дм = 190 см
2) 190-7=183 (см) - ширина
3) (190+183)*2=556 см - P прямоугольника

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