Предмет: Математика, автор: gromnikita11

Хелпа плиз все на фото с обьяснением пж уже здавать надо

Приложения:

Ответы

Автор ответа: SheWhoRunsOnTheWaves

1

Ответ:

Формула радиуса впис. окр. в прав. многоуг.: r = a/(2tg(180/n)),

a - сторона многоугольника

n - кол-во сторон

r = 72.8/(2tg(180/9)) = 72.8/(2tg20)

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Английский язык, автор: Алиса123446585

Напишите как читается

Lisa Simpson is 8 years old. She's short and she's got fair hair. She is very clever. She can sing and play the saxophone and she can speak Swedish and French.

Bart Simpson is 10 years old. He is short with fair hair. He is naughty and noisy. He likes comic books and skateboarding. He can speak French. He has two sisters, Lisa and Maggie.

Homer Simpson is the father of the family. He is 39 years old and is tall and fat. He likes eating and drinking very much. He is not very clever, but he's funny.

Maggie Simpson is the baby of the family. She is small and she has got fair hair. She can't walk and she can't talk, but she can play the saxophone. She is quiet, friendly and very clever.

Marge Simpson is the mother of the family. She is 38 years old. She is tall and slim and her hair is blue! She can cook well and she is very patient and kind. She is afraid of flying.

2 года назад

Предмет: Английский язык, автор: splinter322

Choose the appropriate froms of the verbs to complete the sentenses.

1) I can't give you the text of the article now. It ... now.
a) is translated b) is being translated

2) Such long bridges ... .
a) are not build b) are not being build

3) We couldn't take photos as our camera ... .
a) was repaired b) was being repaired

4) Coffee ... is Siberia.
a) is not grown b) is not being grown

5) We couldn't get inside. The floors ... .
a) was being cleaned b) were being cleaned

6) I entered the hotel at nine yesterday and saw that everybody was busy. The rooms ... for the arriving guests.
a) were prepared b) were being prepared

7) Generally such books ... easily.
a) are not translated b) are not being translated

8) Room 26 is not ready yet. It ... .
a) is vacuumed b)is being vacuumed

9) Don't pay attention to the colour of the walls. They ... at the moment.
a) are painted b) are being painted

10) When I lived is Europe last summer, newspapers ... to us early in the morning.
a) were brought b) were being brought

11) Last summer all ma toys ... and put to the garage.
a) were packed b) were being packed

2 года назад

Предмет: Русский язык, автор: ирина459

помогите пожалуйста разобрать по составу слова----- достаток, человечество, стебелёк, колос, пшеницы.

2 года назад

Предмет: Українська мова, автор: aaaa1846

утворіть дієприкметник.Міцний хлопець-....;освітлена кімната-......;тихий вітер-...... Пожалуйста помогите.

8 лет назад

Предмет: География, автор: Аноним

Мини сочинение как поссорились меридиана и параллели кто из них важнее и нужнее
Срочно пожалуйста!

8 лет назад