Предмет: Математика, автор: allen07

В равностороннем треугольнике сторона равна 2√75 см. Найди длину одной из его медиан (запиши только число).

Ответы

Автор ответа: kirichekov
4

Ответ:

длина медианы равностороннего треугольника = 15 см

Пошаговое объяснение:

в равностороннем треугольнике медианы=высотам=биссектрисам.

формула для вычисления высоты равностороннего треугольника:

h =  \frac{a \times  \sqrt{3} }{2}  \\ h =  \frac{2 \sqrt{75} \times  \sqrt{3}}{2}  \\  \frac{2 \sqrt{75} \times  \sqrt{3}} {2} =  \\ \frac{2 \times  \sqrt{25 \times 3} \times  \sqrt{3}}{2} = 15 \\ h = 15

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