Предмет: Алгебра, автор: 20050827g

Оцінити периметр P рівностороннього трикутника зі стороною a дм, якщо 0,2 < а < 0,6. *

0,5 дм < P < 0,9 дм.

0,6 дм < P < 1,8 дм.

0,4 дм < P < 1,2 дм.

0,6 дм < P < 1 дм.

Ответы

Автор ответа: Мишкабаянов

Периметр це сума всіх сторін

У нашому випадку потрібно знайти периметр рівностороннього трикутника, формула його знаходження Р = 3а, отже щоб оцінити периметр потрібно оцінку сторони помножити на 3.

0,2 < а <0,6 | •3

0,6 < Р < 1,8

Відповідь : варіант 2. (0,6 < Р < 1,8)

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