Предмет: Геометрия, автор: sunrise228

В равнобедренном треугольнике АВС ВС = 40 см, AC = 20 см. Найдите периметр треугольника. Ответ дайте в сантиметрах.

Ответы

Автор ответа: Timur4chick

P=2a+b P=20*2+40 P=80 см

Автор ответа: УмныйХомячок

Р=АВ+ВС+СА
Т.к. треугольник АВС - равнобедренный, то АВ=ВС=40см, АС=20 см
Р=40см+40см+20см
Р=100см

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