Предмет: Геометрия, автор: mkata1058

ПОМОГИТЕЕЕ! в равнобедренном треугольнике боковые стороны равны 12 см , найти длину основания если периметр треугольника = 42 см

Ответы

Автор ответа: bearsss

Ответ:

Найдём сумму боковых сторон

12+12 = 24 см

Тогда основание

42-24 = 18см

Ответ : Длина основания равноб. треугольника равна 18 см.

Автор ответа: rominaiska

Ответ:

Длина у основания-18 см

Объяснение:

а=12

в=12

Р=42

Р=а+в+с , с=Р-(а+в)

42-(12+12)=18

Ответ:с=18

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