Предмет: Геометрия, автор: liubomyrstriletskyy

Бічна сторона рівнобедреного трикутника 3 см, основа 4 см. Який периметр ?


liftec74: 3+3+4=10cm
zmeura1204: Або 4+4+3=11cm

Ответы

Автор ответа: АнтиСпираль
3

Бічна сторона рівнобедреного трикутника 3 см, основа 4 см. Який периметр?

Відповідь:

Периметр рівнобедреного трикутника - 10 сантиметрів

Пояснення:

Периметр рівнобедреного трикутника знаходиться за допомогою послідовно складених довжин його сторін або помноженої довжини бічної сторони на 2 і доданої до твору довжини основи.

Знаходимо периметр, складаючи сторони:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

P = 3 + 3 + 4 = 6 + 4 = 10 см.

Знаходимо периметр за допомогою множення та додавання:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

P = 3 * 2 + 4 = 6 + 4 = 10 см.

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zmeura1204: Або 4+4+3=11
liftec74: Основа 4. Потому 4+4+3 быть не может
zmeura1204: Обоснуйте?
zmeura1204: Чтобы треугольник существовал необходимо: Сумма двух сторон больше третьей 4+3>4; 4+4>3; основание 3; боковая сторона 4.....
zmeura1204: Поэтому в таком случае два решения!.
zmeura1204: А, точно, не так прочитала. Бывает.
liftec74: Конечно любой может ошибаться. Особенно по невнимательности. Но в этом Я чемпион.
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