Обчисліть площу бічної поверхні конуса,в якому твірна дорівнює 13 см,а висота становить:12 см. - №14499199

Обчисліть площу бічної поверхні конуса,в якому твірна дорівнює 13 см,а висота становить:12 см.
- Предмет:
  Геометрия
- Автор:
  boo53
- 6 лет назад

Ответы 1

L=13см,h=12смR=√(L²-h²)=√(169-144)=√25=5смSб=πRLS=π*5*13=65πсм²
- Автор:
  robertuimw
- 6 лет назад
- 0
Добавить свой ответ

Еще вопросы

IV. Выберите правильный вариант.
1. I've just bought ... copy of his latest
book.
a) — , b) a, c) the, d) any.
2. ... in my class likes him.
a) All, b) All pupils, c) All the pupils, d)
Everyone. 3. Jack left ... Paris last week.
a) in, b) for, c) from, d) to.
4. They... yet.
a) didn't arrive, b) haven't arrived, c) hadn't
arrived, d) don't arrive.
5. Turn right... the end of the street.
a) at, b) in, c) to, d) on.
6. Nelly is ... at History than Jane but worse
at French.
a) as good, b) not so good, c) better, d) best.7. A young man asked if we ...
students.
a) are, b) were, c) have been, d) shall be.
8. I have asked some friends — for tea.
a) to go, b) to stay, c) to bring, d) to drink.
9. Has he ... you of his decision?
a) talked, b) said, c) told, d) spoke.
10. She made her husband ... the tree.
a) to cut down, b) cut down, c) to have cut
down, d) cutting down.
11. When I entered they ... to music.
a) have listened, b) were listened, c) were
listening, d) listen.
12. She spoke to ... person at the party.
a) few, b) a few, c) every, d) many.
13. I ... glasses since I was a child.
a) wear, b) am wearing, c) have been wearing,
d) was wearing.
14. They took a rest after they ... the yard.
a) had cleaned up, b) were cleaning up, c)
would clean up, d) have cleaned up.
15. I knew I'd forgotten ... .
a) somewhere, b) anywhere, c) something, d)
anything.
16. You usually have dinner at home, ... ?
a) do you, b) don't you, c) have you, d)
haven't you.
17. The police haven't got ... information to
catch the robber.
a) some, b) enough, c) another, d) these.
18. I
haven't heard ... you.
a) anyone call, b) anyone to call, c) someone
call, d) someone to call.
19. The news you've brought ... much better...
than last time.
a) is, b) are, c) have been, d) were.
20. I hope I've got ... mistakes in my test
today. a) little, b) less, c) fewer, d) fewest.
- Предмет:
  Английский язык
- Автор:
  sophie50
- 6 лет назад
- Ответов:
  
  1
- Смотреть
сумма двух чисел равна 120 что больше разности в 4 раза найди меньшее число
- Предмет:
  Математика
- Автор:
  javion
- 6 лет назад
- Ответов:
  
  3
- Смотреть
Какие города Украины расположены на берегах Днепра?
- Предмет:
  Русский язык
- Автор:
  flakeyb21g
- 6 лет назад
- Ответов:
  
  3
- Смотреть
Представьте что вы победитель шоу "последний герой". Вы провели 30 дней на острове в Тихом океане. Расскажите об одном из этих дней.( на русском).
- Предмет:
  Английский язык
- Автор:
  concepciónivai
- 6 лет назад
- Ответов:
  
  1
- Смотреть

How much to ban the user?

1 hour 1 day 100 years