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Вопрос по математике:
1. Ширина прямоугольного участка 250 м, а длина его в 1целая 1/2
раза больше ширины. Найдите периметр и площадь участка.
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Автор:
kayden
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Ответ:
Пошаговое объяснение:
1 1/2 = 1,5
250*1,5=375м лина участка
(250+375)*2 = 625*2=1250м периметр участка
250*375=93750м² площадь участка
Ответ:
b=250м
a=b*1 1/2=b*1.5=250м*1.5=375м
P=(a+b)*2=(250м+375м)*2=625м*2=1250м
Пошаговое объяснение:
Еще 4 ненужных тебе вопроса, но это важно для поиска
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Вопрос по русскому языку:
Помогите по русскому языку пожалуйста срочно надо
-А- пишется
Ответ:
изл…гать
выр…щенный
пл…вчиха
подм…чить репутацию
соприк…сновение
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Ответов: 1
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6 лет назад
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Вопрос по английскому языку:
Прочитайте тексты и установите соответствие между текстами и их заголовками: к каждому тексту, обозначенному буквами A–G, подберите соответствующий заголовок, обозначенный цифрами 1–8. Используйте каждую цифру только один раз. В задании есть один лишний заголовок.
1.
An underwater accident
2.
The great engineering
achievement
3.
Ways of travelling through the tunnel
4.
An inaccurate name
5.
The first project for an
alternative route
6.
Great work to complete
the project
7.
Meeting in the centre
8.
Safety tips while travelling
A.
The Channel Tunnel (or Chunnel) is a long tunnel between England and France under the English Channel. The Channel Tunnel is the longest undersea tunnel in the world. The section under the sea is 38km long and the entire length is 50.5km. At its lowest point it is 75 metres deep. The tunnel was recognised as one of the ‘Seven Wonders of the Modern World’ by the American Society of Civil Engineers.
B.
For centuries, crossing the English Channel via boat had been considered a miserable task. The windy weather and choppy water made travellers seasick. So, in 1802, French engineer Albert Favier proposed to dig a tunnel under the water of the channel. Favier’s plan was adopted by French leader Napolean Bonaparte. But the British rejected the plan. They feared that Napoleon wanted to build the tunnel in order to invade England.
C.
At the end of the 20th century the idea was revived. The digging of the Channel Tunnel began simultaneously from the British and the French coasts. The most difficult task was making sure that both the British side of the tunnel and the French side actually met up in the middle. Special lasers and surveying equipment were used. On December 1, 1990, the meeting of the two sides was officially celebrated. For the first time in history, Great Britain and France were connected.
D.
Although the meeting of the two sides of the service tunnel was a cause for great celebration, it certainly wasn't the end of the Channel Tunnel building project. Crossover tunnels, land tunnels from the coast to the terminals, electrical systems, fireproof doors, the ventilation system, and train tracks all had to be added. Also, large train terminals had to be built at Folkestone in Great Britain and Coquelles in France.
E.
It took 13,000 engineers and technicians to construct the tunnel. However, it is wrong to call it a tunnel, as there are actually three tunnels. There are two running tunnels, one each way. Additionally, there is a smaller service tunnel, with a crossover in the middle, in case there’s an emergency so the trains can actually change to either side. The tunnels themselves are about 50 meters below the seabed.
F.
A fire erupted on November 18th, 1996 in the Channel Tunnel as the Eurostar train was racing through the southern tunnel. The corridor was filled with smoke and the majority of passengers were overwhelmed with fumes. Fortunately, they were all rescued after 20 minutes, but the fire continued to rage. It ended up damaging both the tunnel and the train before it was completely put out.
G.
There are two options to travel through the tunnel. You can either go on a passenger train, the Eurostar, which departs from London, Paris and Brussels city centres. Or you can go on the drive-on service, called the Eurotunnel Shuttle, starting close to the tunnel entrance where you drive your car or truck onto special rail cars. The Eurostar takes about 2 hours and 15 minutes to travel from London to Paris.
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Ответов: 1
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6 лет назад
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Вопрос по английскому языку:
Прочитайте тексты и установите соответствие между текстами и их заголовками: к каждому тексту, обозначенному буквами A–G, подберите соответствующий заголовок, обозначенный цифрами 1–8. Используйте каждую цифру только один раз. В задании есть один лишний заголовок.
1.
A place to learn about the traditional craft
2.
Strict rules to follow
3.
The local crafts festival
4.
The origin of the name
5.
A special and recognizable design
6.
Good for medical use
7.
Geographical location
8.
A wide choice to offer
A.
Gzhel is a famous type of Russian ceramics. It comes from the region with the same name, which is situated about sixty kilometers away from Moscow. Gzhel is not one place, to be exact. There are about 27 villages in the area which are involved in Gzhel ceramic production. The place can be easily reached by railroad and it is often visited by tourists.
B.
It is believed that the place where Gzhel ceramics is produced, was named after the river Gzhelka, a small river flowing through the area. However, linguists still argue about where the word comes from. Some of them say it has Baltic roots. Others claim that the name is connected with the technological process. The word gzhel is similar to an old Russian word which means burn. Indeed, the clay should be burnt to become hard before it is good enough for pottery.
C.
The clay production in Gzhel started to develop in the 17th century when the Russian monarch ordered the delivery of different sorts of clay to Moscow. Gzhel clay was found to be the best for making pots and containers for pharmacies. The doctors and pharmacists valued it a lot. They preferred to keep most of the medicine and herbs in ceramic pots to keep them fresh and effective for a long time.
D.
By the 19th century, the Gzhel industry had become a profitable business. About twenty-five factories were producing all sorts of cups and plates, decorations and toys. Shiny white horses, birds and dolls became really famous. Dinner sets were popular with rich people and even with monarchs. Official sets contained up to eighty items. However, the largest dinner set was designed for a hundred and fifty people.
E.
Gzhel ceramics can be easily identified by its beautiful white and blue coloured decoration. White means pure snow and moonlight. Light and dark blue symbolize the calm sky and rivers. Though the images on ceramics are usually flowers, they are all unique. Every item is a handmade picture with a unique combination of lines. Blue and white Gzhel ceramics are well-known all over the world.
F.
You may think that Gzhel painters create their works freely, using their imagination. Although the talent of an artist and creativity are certainly important, the painter needs to follow a very strict technological scheme. Each ornament represents an image or a story that is given a code. All the codes are listed in catalogues and kept in the factory library. Technologists use catalogues to modernize production and organize training for new painters.
G.
The Gzhel museum is a special attraction. The finest items from the 15th century to the present are displayed there. The collection of the museum contains about two thousand pieces and presents a great variety of bowls, vases, tea sets, toys and statutes. The place is good for a family day out – apart from enjoying the displays and buying souvenirs, you can watch the production process or take classes in sculpture or painting.-
Ответов: 1
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6 лет назад
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Вопрос по химии:
объём раствора ацетона=950см3,объёмная доля ацетона =30%,плотность ацетона =0,9г/см3. Найти массу ацетона.-
Ответов: 6
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6 лет назад
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