Найдите радиус окружности, если длина окружности равна 18π.
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15.02.2021 18:28
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18п*3П=54Пответ 54
L=2*пи*r; r=L / 2*пи. подставляем значения: r=18*пи / 2*пи=9(см). ответ: r=9 см.
Пошаговое объяснение: