площадь сектора равна 157 мм^2,центральный угол составляет 72°.Найдите радиус.

площадь сектора равна 157 мм^2,центральный угол составляет 72°.Найдите радиус.
- Предмет:
  Математика
- Автор:
  isabellanbbg
- 5 лет назад

Ответы 1

Площадь сектора Sc = 157 мм² центральный угол <Cc =72 град

полная площадь кругуа S - ? центральный угол для полной окружности <C=360 град

S = Sc * <Cc/<C = 157 *360 /72 = 785 мм²

S =pi*R²

радиус R=√ (S/pi) =√ (785/pi) = 15.8 мм

ОТВЕТ 15.8 мм
- Автор:
  salem5v4r
- 5 лет назад
- 0
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площадь сектора равна 157 мм^2,центральный угол составляет 72°.Найдите радиус.

Ответы 1

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