Предмет: Геометрия, автор: sivirinka2015

Помогите решить пожалуйста.
Диагональ осевого сечения цилиндра,равная 4√3 см образует с плоскостью основания угол 30 градусов. Найдите боковую поверхность цилиндра.

Ответы

Автор ответа: Ho1ho2ho3

L лежит против угла в 30 гр= 1/2 гип= 2 корня из 3
R= корень из ( 16*3-4*3)= 6
Бок поверхность =2пиRL=2пи* 2 корня из 3* 6

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