Предмет: Геометрия, автор: vilinchukvika

Знайдіть бічну сторону рівнобедреного трикутника якщо його периметр дорівнює 58 см , а основа 18 см.

Ответы

Автор ответа: korchmit

5

боковые стороны равны. Поэтому получим и решим уравнение
2х+18=58
2х=58-18
2х=40
х=20 см - боковая сторона

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