Предмет: Геометрия, автор: vetakul46

Найдите площадь прямоугольника БДМН, если сторона БН равна 10, а одна из диагоналей 12

Ответы

Автор ответа: Аноним

В треугольнике БМН угол БНМ будет прямой, тогда по т.Пифагора:

МН² = БМ² - БН²

МН = √(144-100) = 2√11

S = 2√11*10 = 20√11

Ответ: 20√11

vetakul46: благодарю

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