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Задача 3.
Решите задачу:
Около правильного шестиугольника описана окружность и в него вписана окружность. Длина большей окружности равна 4 пи. Найдите площадь кольца и площадь шестиугольника.
Проверьте свое решение, двигая ползунок на чертеже.