Предмет: Геометрия, автор: SvetaShif

ПОЖАЛУЙСТА!!ОЧЕНЬ ПРОШУ!!

Две боковые грани наклонной призмы-ромбы с острым углом 30 градусов, а третья боковая грань-квадрат.Высота призмы равна 4*корень из 2 см, а боковое ребро наклонено к плоскости основания под углом 45 градусов.Найдите площадь боковой поверхности призмы.

Ответы

Автор ответа: cos20093

0

Боковое ребро равно высоте, деленной на синус угла наклона ребра... а по условию, все ребра равны между собой :)) Вообще то это уже всё решение.

Боковое ребро равно 8, площадь квадрата (одна из боковых граней) - 64, а площадь ромба со стороной 8 и улом 30 градусов - 32, полная площадь 64+32+32 = 128.

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