Предмет: Математика, автор: MariyaPivovarova

1) Радиус колеса автомашины 37,5 см. Машина едет по шоссе с такой скоростью, что каждую минуту колеса делают 400 оборотов. Найдите скорость автомашины в км/ч.

Ответы

Автор ответа: mefody66

0

За 1 оборот колесо проезжает 2pi*R = 75pi ~ 235,62 см = 2,3562 м
За 1 минуту оно проезжает 400*75pi ~ 94247,78 см ~ 942,5 м.
А за 1 час 942,5*60 = 56550 м = 56,55 км,
Ответ: 56,55 км/час

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TERM 1 Unit 1: Legend or Truth?
Task 1:
Learners first scan and skim the text quickly and say what the text is about, who the main characters are and what the main conflict of the story is about.
Work in pairs. Read the text quickly and identify the following:
- main idea of the text
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The Legend of Medusa (Greek mythology)
1. Polydectes, an evil king of the island of Seriphos, fell madly in love with a beautiful woman named Danae. He wanted to marry her, but wanted nothing to do with her adult son, Perseus. Hoping to get rid of Perseus, Polydectes ruthlessly tricked the young man into brashly undertaking a deadly mission - to bring him the head of a dreaded monster called Medusa.
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bent by the Gorgons' scales. The nymphs gave Perseus winged shoes so that he could fly, a cap that made him invisible, and a pouch in which to carry the Gorgon's head.
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Work with the dictionary and group the words in bold into categories.
Adjectives: ___________________________________________
Verbs: ______________________________________________
Nouns: ______________________________________________
Collocations _________________________________________ [1]
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- The details in the article are clear and supportive of the topic.
- A variety of linking words are used.
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Descriptor
A learner
Task
- writes a thesis that describes the content;
- writes a topic sentence which grabs attention and focuses on the main idea;

− uses a variety of linking words;
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