Предмет: Геометрия, автор: jdieeveidjejjss

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Автор ответа: zorroomegap1h2dl

Длина окружности вычисляется по формуле 2πr.
Следовательно, в данном случае, С = 5*2π = 10π.
Длина дуги вычисляется по формуле а*rπ/180
l = 5/4 π.

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