Предмет: Математика, автор: 0808Юлия8080

Знайдіть площу круга, якщо довжина його кола дорівнює 10п см

Ответы

Автор ответа: xxxeol

Длина окружности по формуле
L = πD = 10π см.
Находим диаметр
D = L:π = 10 см.
Площадь круга по формуле
S = 1/4*π*D² = 100/4*π = 25*π см² - ОТВЕТ

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