Предмет: Математика, автор: котик20031

Периметр прямо угольник 66 дм.Длина его одной стороны составляет три одинацытых периметра.Найдите площадь прямо угольник.

Ответы

Автор ответа: кляча
0
Весь периметр = 11 частям
1) 66 : 11 = 6(дм) приходится на одну часть периметра
2) 6 * 3 = 18(дм) длина одной стороны периметра
Так как весь периметр = 11 частям, то другая сторона прямоугольника =
3) (11 - (3*2)) : 2  = 2,5 (частей)
4) 6 * 2,5 = 15(дм) - длина другой стороны прямоугольника
5) 15 * 18 = 270(кв.дм)
Ответ: 270 кв.дм - площадь прямоугольника






Автор ответа: котик20031
0
Спасибо
Автор ответа: кляча
0
Ок!
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Математика, автор: marasovaluiza85
помогите пожалуйста. ​
6 лет назад
Предмет: Математика, автор: kalimanturarbekova
В одном пучке 6 морковок,а в другом-4морковки .сколько морковок в двух пучках
6 лет назад
Предмет: Английский язык, автор: Xcv111xcv111
Срочно спасите
Пожалуйста помогите ответить
1. Simon and Emma ____ going to get married. *1 балл
aren't
isn't
don't
2. Where ____ going to study? *
1 балл
are you
you are
is you
3. Which sentence is NOT correct? *
1 балл
We’re going to see a film.
Paul’s not going to get a job.
They’re not going visit the castle.
4. Are you going to meet Ruth? *
1 балл
Yes, we are.
Yes, she is.
Yes I'm.
5. Which question is correct? *
1 балл
What time we going to arrive?
Where you are going to stay?
Which television are you going to buy?
6. Rebecca is __________ have a baby next month. *
1 балл
go to
goes to
going
going to
7. ______ you going to cook supper? *
1 балл
Will
Are
Do
What
8. What are you going to __________ this evening? *
1 балл
wore
wear
wearing
wears
9. They _______ to the railway station. *
1 балл
is not going to walk
are not going to walk
am not going to walk
10. They _______ the lottery. *
1 балл
is going to win
going to win
are going to win
are going win
11. John _______ a plane. *
1 балл
going to fly
going flying
am going to fly
is going to fly
12. I _______ a barbecue. *
1 балл
are going to have
is going to have
am going to have
going to have
13. Mary _______ next Saturday. *
1 балл
is going to sing
am going to sing
is going sing
is going singing
14. Look at the clouds! It's _______. *
1 балл
is going to rain
going rain
going to rain
go raining
15. Mary is _______ her grandparents at the weekend. *
1 балл
is going to visit
going to visit
am going visit
go to visit
16. We _______ have dinner at an Italian restaurant tomorrow. *
1 балл
go to
going to
are going
are going to
17. Peter and I _______ to the bowling alley on Friday. *
1 балл
am going to go
am going
are going to go
are going go
18. They _______ by plane. *
1 балл
aren't going to travel
are going travel
are not going travel
aren't going travel
19. _____ Colin going to _____ the dog for a walk? *
1 балл
Are, take
Is, take
Is, taking
Is, to take
20. Matt _______ tennis tonight. *
1 балл
am going to play
is going to play
is going play
's going playing
6 лет назад
Предмет: Геометрия, автор: Аноним
помогите  пожалуста
только правельно
1 вариант
9 лет назад
Предмет: Математика, автор: Dimka122880
Решите задачу: было 38%груш съели 15% купили 289%апельсинов продали 281%апельсинов...
вопрос:сколько останется %всесте?
9 лет назад