Предмет: Геометрия, автор: shamil2112

Дан прямой круговой конус, r = 6 cм, ВСО = 450. Найдите объем конуса.

Приложения:
Аноним: Где рисунок?
Аноним: Не понятно какой угол 45°

Ответы

Автор ответа: Аноним
3

Ответ:

V=72π

Объяснение:

∆ВСО- прямоугольный равнобедренный треугольник

<ВСО=<СВО=45°. Углы при основании равны.

ВО=ОС=6

V=1/3*Sосн*h=1/3*π*OC²*BO=1/3π*6²*6=

=72π

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