Предмет: Математика, автор: ksiusha4

радиус одного круга равен 8см.а другого -6см,найдите отношение а)диаметров в)длин окружностей д)площадей малого и большого кругов

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Автор ответа: Сыльги

a)d1=2×8=16;d2=2×6=12;d1/d2=4/3
в)C=2п(пи)r
C1=2×3.14×8=50,24
C2=2×3.14×6=37.68
C1/C2=50.24/37.68=4/3
д)S=п(пи)r^2
S1=3.14×64=200.96
S2=3.14×36=113.04
S1/S2=16/9

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