Предмет: Геометрия, автор: tfalova

осевое сечение цилиндра -квадрат,площадь которого 12∧см.найдите площадь основания цилиндра.

Ответы

Автор ответа: volodyk
0
площадь квадрата=сторона в квадрате=12, сторона квадрата=диаметр основания цилиндра=корень12, радиус цилиндра=корень12/2, площадь основания цилиндра=пи*радиус в квадрате=пи*12/4=3пи
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