Найдите площадь ромба, если его высота равна 16, а острый угол 30°.

Найдите площадь ромба, если его высота равна 16, а острый угол 30°.
- Предмет:
  Геометрия
- Автор:
  cruella
- 5 лет назад

Ответы 1

площадь ромба можно найти по стороне и углу. сторона неизвестна. сторону можно найти из полученного треугольника, у которого известна сторона и противоположный угол. существует формула соотношения гипотенузы к известной в нашем случае стороне треугольника и известному углух=16*sin30=16*1/2=8S=8^2*sin30=64*1/2=32
- Автор:
  thunder thighs
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

Тестик))))

Выберите правильный вариант.

1. Last year I visited a lot of cities. I liked ___ Paris most of all.

a) the

b) -

c) some

d) a

2. This butterfly's annual _____________ is across North America. (to migrate)

a) migrasion

b) migratity

c) migration

d) migratement

3. The children were left in my _______. (to care)

a) carity

b) care

c) caretion

d) carement

4. The fortress was _______ against all the power of man. (to defense)

a) defensable

b) defensitive

c) defensal

d) defensible

5. Spiders are __________ to vibrations on their web. (to sense)

a) sensable

b) sensative

c) sensitive

d) sensible

6. If I _____ a broom, I would sweep the floor.

a) will have

b) has

c) to have

d) had

7. I would have talked to him if I ____________ him yesterday.

a) had recognized

b) recognized

c) recognize

d) will recognize

8. If he didn’t smoke, he _______ a lot of money.

a) will save

b) would save

c) saved

d) had saved

9. We ______________ (arrive) earlier if we _______________ (not lose) our way. But unfortunately we were lost.

a) had arrived, wouldn’t have lost

b) arrived, wouldn’t lose

c) would have arrived, hadn’t lost

d) would arrive, didn’t lose

10. If today _______ Saturday, we _______ to the beach.

a) would be, went

b) were, would go

c) would have been, had gone

d) will be, go

11. If I hadn’t drunk so much yesterday, I _____________ a headache today.

a) wouldn’t have had

b) didn’t have

c) wouldn’t have

d) don’t have

12. She __________________ him some money yesterday if she were rich.

a) would have lent

b) would lend

c) lent

d) had lent

13. If she ________ Japanese, she __________________ that man yesterday.

a) spoke, would have helped

b) would speak, had helped

c) spoke, had helped

d) would speak, would have helped

14. Sarah finds it strange to write in ink. She ________________________ in ink.

a) isn’t used to write

b) isn’t get used to writing

c) isn’t used to writing

d) doesn’t get used to write

15. Did it take much time to __________________ on the left?

a) become used to drive

b) get used to driving

c) to be used to drive

d) get used to drive

16. It wasn’t difficult for her to wake up at 7. She ________________ early.

a) was used to waking up

b) is used to waking up

c) be used to waking up

d) were used to waking up

17. One could hardly avoid ________________ them.

a) to notice

b) noticing

c) being noticed

d) having noticed

18. I enjoy _______________ good films.

a) being watched

b) to watch

c) watching

d) having being watched

19. The architect suggested _______________ the building.

a) to be restoring

b) to restore

c) restoring

d) having restored
- Предмет:
  Английский язык
- Автор:
  caiden294
- 5 лет назад
- Ответов:
  
  1
- Смотреть
два велосипедиста едут навстречу друг другу.Один едет со скоростью 14км\ч,другой-со скоростью 12 км/час. В какой-то момент времени расстояние между ними было ровно 8 км.Какое между ними было растояние спустя1 ч? рассмотри два случая.
- Предмет:
  Математика
- Автор:
  leandrocompton
- 5 лет назад
- Ответов:
  
  3
- Смотреть
Корень в слове вышел
- Предмет:
  Русский язык
- Автор:
  mountain76
- 5 лет назад
- Ответов:
  
  12
- Смотреть
Является ли решениемы уравнений
3x+y=2
2x-y=3
Пара чисел:а) (1;1) б (1;-1)
- Предмет:
  Алгебра
- Автор:
  kathryn8lu3
- 5 лет назад
- Ответов:
  
  1
- Смотреть

Найдите площадь ромба, если его высота равна 16, а острый угол 30°.

Ответы 1

Топ пользователей