Предмет: Математика, автор: Pechenika2233

Арена цирка представляет собой круг радиуса 20 м. Определите длину пути цирковой лошади проскакавшей вдоль арены 5 раз. А какую площадь занимает ковер расстиланый на этой арене?

Ответы

Автор ответа: kammal

Ответ:

628 м

1256 м²

Пошаговое объяснение:

Длина окружности находится по формуле P=2πR

Отсюда Р=2*3,14*20=125,6м

Пусть лошади = 125,6*5=628 метров

Площадь окружности (ковра) находится по формуле S=πR²

отсюда =3,14*20²=3,14*400=1256 м²

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