Предмет: Математика, автор: alina20012012

Площадь прямоугольного футбольного поля равна 66а (аров),а ширина поля - 60 м (метров).Найдите периметр поля.Сколько килограммов семян газонной смеси понадобится,чтобы засеять это поле,если на квадратныый метр уходит г семян?

Ответы

Автор ответа: Бедныйпапа
0

1 ар = 100 м²

Значит площадь в м² равна 66*100=6600 м²

Находим длину 6600:60=110 м

Р=2*(60+110)=340 м

Кол-во семян 6600* кол-во грамм на м²

Автор ответа: ФАИНА1984
0

66а=600 м2

1)6600:60=110 м-длина поля.

2)2*(110+60)=340 м-периметр поля.

3)6600*5=33000 грамм=33кг семян-понадобится.

ОТВЕТ. 33кг семян.

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Прочитайте текст. Определите, какие из приведенных ниже утверждений (1 – 6) соответствуют содержанию текста (True), какие не соответствуют (False) и о чем в тексте не сказано, то есть на основании текста нельзя дать ни положительного, ни отрицательного ответа (Not stated). Обведи букву (a, b или c) с правильным ответом.
Summerhill Scool
What will you do if your teacher says you can have a lesson or do home? In fact, in Summerhill School teachers really do it. Summerhill is the oldest children’s democracy in the world. It is, maybe, the most famous ‘free’ school.
This school in Suffolk (the United Kingdom) is a very special place. Trees and grass, meadows and playing fields give children a good chance to play as much as they want. They also do a lot of project work.
A man called A. S. Neill opened this school in 1921. Neill knew well what kinds of problems many children have at school and he believed he could help them feel free. So each child there can choose what he wants in life. The children at Summerhill decide themselves if they want to have lessons or not. It is strange, but most of them do. They often come from schools at which they were unhappy and didn’t want to do any work at all. But at Summerhill they usually decide that to have classes is more interesting than not to have them.
Like in most other schools, the children study different subjects. At the beginning of a term each students gets a timetable, on which they write the lessons they want to have.
Another unusual thing about Summerhill is the meetings. There teachers and students discuss the school rules two times a week. If a teacher wants to tell everyone about a student’s bad behaviour, he can do it at the meeting. A student can also say what he dislike about a teacher. At the meetings children can listen, think and make decisions about their own lives.
And you? Can you make decisions yourself? Would you like to study at Summerhill?
1. Summerhill school is about one hundred years old.
a) True b) False c) Not stated
2. A. S. Neill was a famous teacher.
a) True b) False c) Not stated
3. Most children at Summerhill don’t want to have classes.
a) True b) False c) Not stated
4. At the end of the school year children decide what lessons they want to have.
a) True b) False c) Not stated
5. Teachers and students speak about the school rules and the school life at the meetings.
a) True b) False c) Not stated
6. Children at Summerhill take a lot of trips.
a) True b) False c) Not stated
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