Предмет: Математика, автор: koroleva12121

Площадь прямоугольника 63 см в квадрате. Найди его периметру,если длина. одной книги стороны 7см

koroleva12121: ну быстреее

koroleva12121: спс

Ответы

Автор ответа: dashasidorova5

63/7=9
(7+9)*2=32S-63см²
а-7см
в-?
Р-?
S=а·в
63см²:7см=9см (ширина)
Р=(а+в)·2Р=(7+9)·2Р=32см
Ответ: Р=32см

или так:
63/7=9
(7+9)*2=32

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