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Автор - Матвиенко Алевтина

Считая,что П=3.14,определите длину окружности и площадь круга,если радиус R=2.5см

Ответ

Автор - Гурьева Анастасия

L=2Пr=2*3.14*2.5=5.785(см)n
S=Пr²=3.14*2.5²=19.625(см²)

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