Радиус основания цилиндра равен r, диагональ осевого сечения-d. Найдите площадь осевого сечения.

Радиус основания цилиндра равен r, диагональ осевого сечения-d. Найдите площадь осевого сечения.
- Предмет:
  Математика
- Автор:
  isidrol4bf
- 5 лет назад

Ответы 1

Осевое сечение цилиндра состоит из высоты цилиндра и двух радиусов (диаметра) и является прямоугольником, в котором проведена диагональ, делящая его на два прямоугольных треугольника, поэтому d - гипотенуза, а 2r - катет. Найдем высоту цилиндра = корень (d^2 - 4r^2).Площадь осевого сечения равна высота * 2r = 2r* корень (d^2 - 4r^2)
- Автор:
  emma24
- 5 лет назад
- 0
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7. The Mad Tea Party
Alice looked around and saw the Cheshire Cat in a tree, with a big smile on its face.
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Радиус основания цилиндра равен r, диагональ осевого сечения-d. Найдите площадь осевого сечения.

Ответы 1

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