Предмет: Математика, автор: Аноним

Измерения прямоугольного параллелепипеда относятся 9:13:17
Найди сумму ребер прямоуг. Параллелепипеда если длина меньшего ребра=18см. Помогите пожалуйста!

Ответы

Автор ответа: xxxeol
0

Находим размер одной части

1) а = 18 см : 9 = 2 см -одна часть.

Сумма всех ребер В ЧАСТЯХ

2)  N = 4*(9+13+17) = 4*39 = 156 частей

Находим сумму  длин ребер в сантиметрах.

3) 156*а = 156*2 см = 312 см - длина - ОТВЕТ

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