Предмет: Геометрия, автор: masha83521masha835

Боковая сторона равнобедренного
треугольника равно 10 см, а его основание – 12 см. Найдите его площадь.

Ответы

Автор ответа: Лиsичка
0
h - высота треугольника, проведенная к основанию. Она делит основание на две равных части. Вычисляем высоту по теореме Пифагора
h= sqrt{100-36} =8

Площадь треугольника находим по формуле S= frac{1}{2} ah= frac{12*8}{2} =48

Ответ: 48см2

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