Найдите пж площадь если радиус равен 3,5см; Х-1,5см

Найдите пж площадь если радиус равен 3,5см; Х-1,5см
- Предмет:
  Математика
- Автор:
  pío
- 6 лет назад

Ответы 5

А галочка это знак чего? Которая наверху?
- Автор:
  leviqqce
- 6 лет назад
- 0
это формула площади кольца
- Автор:
  francaisblair
- 6 лет назад
- 0
Понял, кольцо, а не круг
- Автор:
  will
- 6 лет назад
- 0
Ответ:
По формуле S=п*R^2
S=3,14*3,5^2=38,465
Только несовсем понял,что за Х
Пошаговое объяснение:
- Автор:
  kayleeyoung
- 6 лет назад
- 0
$S= \pi *(R^{2}-r^{2})=\pi *(12,25-2,25)=\pi *10=10\pi$
- Автор:
  garrett
- 6 лет назад
- 0
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Найдите пж площадь если радиус равен 3,5см; Х-1,5см

Ответы 5

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