Предмет: Геометрия, автор: elyaelina

Основание пирамиды-прямоугольный треугольник с катетами 15 и 20 см.Боковые грани пирамиды , содержащие эти катеты, перпендикулярны к плоскости основания, а третья боковая грань наклонена к ней под углом 60 градусов. Найдите площадь полной поверхности пирамиды.
ПОМОГИТЕ ПОЖАЛУЙСТА, ОЧЕНЬ НАДО)))Заранее спасибо!!!

Ответы

Автор ответа: badweek

0

как-то так, надеюсь почерк разберешь

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