Площадь сектора коуга радиуса 22 равна 165. Найдите длину его дуги.

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Добавьте слова в пропуски про Россию: When you greet someone in this part of the world, you should ... , but never ... . During the conversation, you should ... , but don't ... as this is considered rude. Use words like ... and ... . These are very polite. As far as eating is concerned, always ... or ... but never ... . At the end of meal, don't ... . There are some subjects that you should avoid, such as ... , but feel free to talk about ... or ... as all these are considered inapproprite. We'd also recomend you to ... .

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