Предмет: Геометрия, автор: Аноним

знайдіть площу трикутника за довжинами трьох сторін 3 см 7 см 8 см​

Ответы

Автор ответа: Аноним
1

полупериметр треугольника равен (3+7+8)/2=9

ПО Герону

s=√(9*(9-3)*(9-7)*(9-8))=3*√12=6√3/см²/

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