-
чтобы поднять ведро из колодца,нужно сделать 12 оборотов ворота. найдите глубину колодца ,если диаметр вала ворота 24см.
-
Предмет:
Математика -
Автор:
sherman65 - 6 лет назад
-
Ответы 1
-
радиус вала 24÷2=12 смдлина окружности вала с=2пи×r=2×3.14×12=75.36см поднимает за 1 оборот75.36×12=904.32 см=9.0432 метра глубина колодца
-
Автор:
bobbypycu - 6 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Переведите текст LITTLE HOUSE The Little House
The little house stood on the beautiful hill in the country. Its walls were white, its doors were red, its floors were bright. But the Little House said, “How big and lonely my rooms feel, with only Mrs. Smith and her cat”.
“How quiet and lonely my kitchen feels, with only the kettle which stands on the table”.
“And how long and lonely the road to my hill looks!”
“I wish some people would come”, said the Little House.
One day it began to snow. It was snowing all day long. The ground was all white around the house and the road was white over the hill. And man came to the door of Little House.
“My feet are cold”, he said to Mrs. Smith. "May I coome in and get warm?"
"Oh, come in", said Mrs. Smith. And she brought the man into the kitchen.
“Good! We have some people!” said the Little House.
It was snowing. Two men came to the door of the Little House.
“Our feet are cold,” they said to Mrs. Smith. “May we come in and get warm?”
“Come in,” said Mrs. Smith.
The Little House began to feel fine.
It snowed and snowed and snowed. A man and a lady and a boy and a girl came to the door of the Little House and said, “May we come in and get warm?”
“Come in, friends,” said Mrs. Smith.
And now the Little House was happy!
The snow was falling. Cars were stopping. More people were coming to the door of the Little House.
Now there were ten people inside. Now there were twenty, thirty, forty!
Mrs. Smith said, “Come in!”
But the Little House said, “I feel a little crowded”.
It snowed and snowed. More people came.
“My floor is tired,” said the Little House.
More people came. They crowded upstairs. “My walls are tired!” said the Little House.
A hundred people crowded the Little House by the evening.
Then they all said, “We are hungry. ”“What will they eat?” said the Little House.
Mrs. Smith said, “Here`s some butter and ham. Here some eggs. And I have a lot of apples."
So they all ate and ate. The night came.
“Where will they all sleep?” said the Little House.
The children were put to bed, six to a bed. The ladies slept on the chairs. The men slept on the floor.
The Little House was tired. His chairs were tired.
In the morning the snow stopped falling. The sun shone brightly in the sky. All the men went out of the Little House. All the cars could move on the road again.
“Good-bye,” said the children to Mrs. Smith.
“We`ll write you a letter. ”“Good-bye,” said the men and the ladies.
“We`ll send your presents”.
“Thank you!” said everyone.
“Goog-bye! Good luck!” said Mrs. Smith and waved her hand. The last car went away.
“It was so nice to have people,” said Mrs. Smith.
But the Little House said, “How beautiful the hill is, without cars”. “How big my kitchen feels, with only the kettle on the table and clock on the wall”.
“And how nice and big me rooms feel, with only Mrs. Smith in the chair and the cat on the sofa!”
And the Little House thought, “It`s nice to have people. But it`s nice to be with Mrs. Smith and a cat again.”-
Предмет:
Английский язык -
Автор:
jessie - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
мама испекла 36 ватрушек она оставила 16 ватрушек на противне остальные разложила на тарелки по 5 ватрушек на каждую. Сколько тарелок потребовалось?
-
Предмет:
Математика -
Автор:
lydiabryant - 6 лет назад
-
Ответов:
2 -
Смотреть
-
-
Два слесаря за два часа совместной работы выточили 46 деталей. Какова производительность труда каждого рабочего, если первый вытачивает на одну деталь в час больше?
-
Предмет:
Алгебра -
Автор:
millieoozy - 6 лет назад
-
Ответов:
0 -
Смотреть
-
-
Помогите пожалуйста! Разложить на множители
125m³n⁶ + 216r⁶L³-
Предмет:
Математика -
Автор:
chaz95 - 6 лет назад
-
Ответов:
1 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years