Question

Решите задачу по Геометрии 7 класс...

Answer 1

Обозначим AB = BC = x

Тогда x - AC = 3 ⇒ AC = x - 3

P = AB + BC + AC = x + x + x - 3 = 3x - 3 = 18.12

3x = 21.12

x = 7.04

AB = BC = x = 7.04

AC = x - 3 = 7.04 - 3 = 4.04

Answer 2

..........................