Предмет: Геометрия, автор: Аноним

Помогите решить /////

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Ответы

Автор ответа: ildar502020

Ответ: 24.

Объяснение:

Решение.

Так как треугольники подобны, получаем отношение:

AD/BC=BD/BF;

5/2.5=BD/12, откуда

BD = 5*12/2.5 = 24.

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